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Homemade ProVap, Oxalic Acid Treatments and Modification Update

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Learn how to do varroa mite treatment with a Provap oxalic acid vaporizer (oav) and recently see recent modifications to my homemade Provap. More and more beekeepers are turning to oxalic acid to treat varroa mites on honey bees. Using oxalic acid vaporizers is very cost effective and does a great job.
OAV treamtments should be done at least 3 times, 5-7 days apart.
1 gram per colony
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OAV Products Used:
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Homemade Provap: • Building A Homemade Pr...
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Опубликовано:

21 авг 2024

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Комментарии : 148

@janvierott4493 4 года назад

For different size cucups, heaters, and /or outside temps, the tuning constants may have to be changed. That is for ever set of condition, the tuning values could change. But, a fixed set of values can be arrived at to cover most operating conditions with the device you have made or purchased. I have been using these PID's for 50 years as a control system engineer.

@gwenlazarus1471 5 лет назад

Thanks for the video. You are one of the few Beekeepers to demonstrate OA with a respirator.

@VaderSpade 4 года назад

I'll try again. I figured out a quick way to clear clogs in the stem after finding a wire just wouldn't clear that last bend. Water and the steam it creates works but slows down the heat cycle. My solution is keeping a mini torch close by. Just heat the tube with the flame and poof the clog is turned to vapor, and you haven't cooled your pot. The $500.00 model keeps the bends of the stem touching the pot, so the heat keeps it clear. Getting tight bends without crimping is the trick there.

@JCsBees 4 года назад

@VaderSpade That is a great little trick. Now I will share a trick with you, Fill the copper tubing with solder after it cools then bend the tubing as you want and it will not crimp. Afterward heat the tubing and melt the solder out.

@VaderSpade 4 года назад

@@JCsBees I will give that a try. I'll use low temp solder for the bending trick. BUT I just bought a MAP gas torch and some high temp solder to better hold the tube in the pot. I bought the MK 350 and I'm rebuilding it. I can't believe they used low temp solder solder to hold the stem in place???

@lyricrane 5 лет назад

I used brass for the bottom of my vaporizer along with the heat wrap. I still have the temp swings as well. To clear that clogged tube I put a cap full of water just like the OA. I’ve also moved to stainless steel tubing to make it more rigid.

@TheFarmacySeedsNetwork 5 лет назад

I like your home-made innovations! Good info! Thanks Jason!

@c.johnmason322 5 лет назад

Every time that I watch your channel, I learn something. Thanks for helping me to be better bee keeper. I have been using a Pro Vap with success for the past 2 years. I use a car battery with an inverter and it works just great - I don't need to bring a generator with me. The battery will easily do my 18 hives, and I suspect that it would do double that without needing a recharge. Use a deep cycle battery, like for boats, and just keep it on a trickle charger in between use. Any good inverter would work to convert from 12 volt to 120. I did, just out of curiosity, buy and try the small Ryobi inverter that uses the Ryobi lithium batteries. It did not work for my provap. Thanks again for everything.

@brucesouthernsassapiaries8316 5 лет назад

Jason you can clean out the OA build up in the tube by putting some water in your OA cup and after it comes back to temp invert to allow the steam to clean out your tube.....works great. You just want to do it before the tube is completely blocked.

@JCsBees 5 лет назад

Good idea!

@jpthedelawarebeeman6239 5 лет назад

I concur - Running a little water through clears it out every time or every other

@jimallen1176 5 лет назад

This is good to know about cleaning the tube with water & steam. I haven't used mine since it blew up in my face. I would like to see someone make one like a long barrel gun, so the danger of OA blowing up in my face wouldn't exist. I'd buy it.

@brucesouthernsassapiaries8316 5 лет назад

@@jimallen1176 I take a container of water with me when I am treating with OAV and use the water to clean out the tube after every second or third treatment whether it needs it or not just to make sure it doesn't blow up in my face.

@pknapp6 4 года назад

I use two diesel glow plugs threaded into opposite sides of the aluminum base and my PID to controls a relay to turn them on and off. Temp stays rock steady at 230C. I did insulate the bowl. My temp sensor is in the base between the glow plugs. I did make sure that my temp sensor contacts the base so there is no air space.

@larrytomlinson8553 5 лет назад

The P I D settings are not Temp, those are units of time. I built one and it works to perfection, later today after Church I will post what I did.

@JCsBees 5 лет назад

Awesome! Can't wait to see what you did.

@larrytomlinson8553 5 лет назад

@@JCsBees already did a detailed post on Barnyard bees. facebook.com/groups/1840466109605990/

@JCsBees 5 лет назад

Hmmmm...... Can't seem to find it. Can you tell me the title of the post it's under? I tried search your name but got other Larry's. lol

@incubatork 5 лет назад

@@JCsBees I cannot find it either

@incubatork 5 лет назад

For those that have a PID controller without autotune this might help you get somwhere near newton.ex.ac.uk/teaching/CDHW/Feedback/Setup-PID.html at the botom of the page there are further links.

@romoshka1 5 лет назад

Before the many smart people put plans and videos online to make your own I bought the JohnO EZ Vap. At ~$160 and no labor it turns out to have been a good decision. On a separate note, OA is naturally found in honey. In Europe there is no requirement to remove supers when treating. My newest interest for research is percentage of phonetic vs capped mites. If early data holds up it would appear that only a very small percentage of the total mite load is phonetic and we know OA does nothing to mites behind cappings. This data would suggest that to be effective OAV would need several treatment very close together. I’m sure there is abundant data out there i just need to dig it up.

@mikesbeesllc 5 лет назад

Johno ez vap about $160. Bought one and best item I ever bought for my bees.

@planbeeapiaries 5 лет назад

He is out of parts at this moment.

@garyshaffer68 3 года назад

After using a home made proVap for 2 years the first year I run it at 450 . Now after running it the second year and after doing alot of reading what happens to OA over 350 degrees. I moved it down to 350. And im getting better kills. So Now I do it every 4 to 5 days for 5 treatments. Once in the Spring then end of June Then August. And hit them just once in December. If there flying. Have been getting zero s and some hives I did get 1 or 2 mites out of 300 bee's but still under 1 percent. 😁 o fogot to say im I'm with in central Pennsylvania.

@JCsBees 3 года назад

I ended up building me a gas vap so I didn't have to deal with an extension cord and I love it. There is some speculation OA can overheated and become formic acid but personally I think it's evaporate before it over heats. Sharing video of gas vap today, check it out and thanks for sharing your insight on the pro vap.

@jeffegg2 5 лет назад

Time to learn pid tuning. You should be able to prevent overshooting.

@DavidJones-ti6mk 2 года назад

I use a 3/16 o.d. coil spring about 5 inches long to clear my copper tube. Goes around the bends easily and works great!

@stephenwawrzyniec6719 4 года назад

If your unit has cooling mode see if you can disable it (negative numbers involve cooling) also thermocouple placement should be placed to best give temperature near the crystals

@chrisgambrell8618 5 лет назад

I keep my propane torch with me and use it to keep the copper tubing hot enough that the OA doesnt crystalize. Works much better than any other thing I've tried to keep it clean.

@c.johnmason322 5 лет назад

Great idea. Thanks. I have had my tube clog up and had to do circus contortions to get it unclogged. The propane flame makes so much sense!

@chrisgambrell8618 5 лет назад

@@c.johnmason322it works like a charm!

@niceed00 5 лет назад

Jason, I really appreciate your videos. Especially since you are local to my location and provide good relevant info.

@JCsBees 5 лет назад

Thanks Ed, I am glad you enjoy them. Sorry today's video was slightly late being released, someone over slept. lol

@planbeeapiaries 5 лет назад

I think having a more efficient heat sink around the pot will stabilize the temp better. If you change the washers to larger copper ones (better heat conductor) the pot will start cooling faster after the power is shut off.

@JCsBees 5 лет назад

That's a interesting suggestion. I know without the washers the steel bracket get hot which adds to the cool down time.

@larrytomlinson8553 5 лет назад

excellent suggestion, total mass is also a key variable, mine cools quickly and remains very close to set temp.

@planbeeapiaries 5 лет назад

@@JCsBees You want it to cool down faster, it will be kicking on more often but it will start cooling much quicker and not jump over as much.

@hyfy-tr2jy 4 года назад

Just a side note....the respirator does NOT work properly if you have facial hair. It requires a proper seal on your face to work effectively and facial hair prevents this.

@strugglingbeekeepermarkcot9642 5 лет назад

Great video I have 7 hives here in West Virginia I hope you get your temperature setting figured out I have never use oxalic acid before I treat my bees with mite away strips I am a new bee keeper I have had my bees since May of this year.

@JCsBees 5 лет назад

Seven hives your first year, huh? Well good for you. Best of luck this winter to you and your bees.

@strugglingbeekeepermarkcot9642 5 лет назад

Thank you I appreciate it I hope they make it my dad and uncle used to have bees when I was a kid they had about 50 hives at one time so I have been around them a little bit but it was different back then they didn’t have to deal with the mites like we have to today I have a RU-vid channel if you want to take a look at it.

@strugglingbeekeepermarkcot9642 5 лет назад

@hootervillehoneybees8664 5 лет назад

Our goldenrod nectar flow is bust this year southest Michigan.. started two weeks late finally started then week of rain just killed it .. still getting good pollen off it . Lucky if I got 30lbs in honey off it . Had high hopes for it my favorite honey.. nothing capped just going to leave it start feeding tomorrow.. over all 43 nucs in 5x5 and 4x4 and 28 production hives all looking healthy ready for winter just need wieght .. last OAV treatments wasn't much for drop looking good there too .. I'll hit them again mid Oct just make sure I'm at zero once brood hatches out

@JCsBees 5 лет назад

Sorry to hear that about the flow of GR. We need rain badly here, I'd almost trade rain for the flow just so I don't have to feed hay this early to my cow herd. Sugar is much cheaper than hay. lol But like you fall honey is my favorite and I wouldn't mind extracting some of it if possible. I know as soon as you walk out my front door your greeted by the smell of GR nectar from my home hives. I love the smell but the wife hates it. lol Best of luck with your bees my friend.

@larrytomlinson8553 5 лет назад

Here is how I did the set up. A infrared thermometer is a must, I had a Thermoworks IR for years cost 89$ you can get a cheap one from Amazon about 30$. Fist check the accuracy of the sensor, adjust as needed. I explain simple method on BYB Facebook. The goal here is to have the cookpot floor temp above 320 and below 350 F at the point where the out light goes off. I found if you turn on unit, let it go to set point then cool down below set point then when the out light comes on be ready to dump 1 gram dose OA into cook pot as light goes out. The PID must be in Auto Tune so once you do one OA dump within 30 seconds pop the lid off and shoot the IR thermometer for cookpot floor temp. With my set point at 455.5 the floor is just above 320 which is perfect. If the floor is above 370 then you have destroyed the OA into useless vapor. Parameters, in OP select self-tuning, under RUN select manual inhibit, under PID control period I set one second, "P" I set to 120, "I" set it to 500, "D" set it to 500 also. The key is auto tune and setting the set temp to achieve pot floor temp between 320/350 after it runs the second time to the set point temp. Once you have that the PID has now locked in the procedure it must use to achieve the set point temp and hold it there,

@PhillipHall01 5 лет назад

Awesome!!! Thanks Larry! Phillip Hall

@davidlagarcelegacyfarms1067 4 года назад

Did you run an auto tune on the PID? I had the same problem with my PID in my home brew system and cheese making. After running AT it no longer overshot the temps.

@incubatork 5 лет назад

Some dunlopillo foam cut into strips works great instead of rags, also everything i have read its 2 grams (actually its 2.23gms per hive acording to a university study)per hive not 1 gram. Langtroth hive size

@JCsBees 5 лет назад

Good idea with the foam. I'll have to double check the amount of acid. There is so many different articles about it's hard to keep up. lol

@mikeries8549 5 лет назад

You forgot gloves in your safety equipment. Wear thick leather gloves to keep from burning your hand when you press the vaporizer down onto the cap.

@shannonswyatt 5 лет назад

Jason, I made a homemade queen cell warmer, and I struggled a bit with the temp. But after some testing with another thermometer I was able to see the temperature at the probe for the heater mat was still rising, but the temperature above that would stay close to my set temperature. Different type thing, but if you can get a secondary temp gauge you may be able to dial it in better.

@janvierott4493 4 года назад

JMOBEE There are tuning constants for the PID controller. P should be ~4 I should be ~70 and D ~ 30 These pid's have a self tuning setting. If it is used to "tune" the PID, it will off shoot ~20deg and then undershoot ~15 and will then set the values. Also for less than ~5 amps through the SSR a heat sink is not needed and ;putting one in the enclosure doesn't get the heat away. After the pot reaches temp, there is many watts lost across the SSR

@JCsBees 4 года назад

So your saying I could safely remove the SSR and the PID will be fine? If that's the case I could make the whole setup smaller in size and weight, that would be nice.

@janvierott4493 4 года назад

@@JCsBees not the SSR but the Alum heat sink is not needed below ~5Amps

@janvierott4493 4 года назад

@@JCsBees The SSR and the heat sink or 2 different things. You need the SSR but not the alum finned heat sink below ~5A. The PID puts out ~5VDC to the SSR. The SSR to a solid state relay that can handle large amps. Above ~5A a bigger heat sink is needed to get the heat generated at the junction of the silicon chip inside the plastic package away from the chip. The "chip" is fastened to the metal plate on the bottom of the plastic case. The metal plate is a small heat sink. When working at high amps, the chips can get real hot and burn up if a bigger heat sink is not used. Been working with these things SSR's, SCR's, TRIAC's; etc since 1967 and have seen them smoke. They generally fails shorted whereas a relay generally fails open. There are PID's that have a relay output and are rated for up to ~3A. That may be the reason that the PROVAP110 only has a 250watt heater. 250/115 = ~2A. There are SSR's that can be run by a relay output. They use a control voltage of ~115vac or some have a relay resistor combination control that can use the isolated relay in the PID to turn them on.

@alexpaulson4597 5 лет назад

Looks pretty slick! I am no expert by any means but if 435 degrees is an optimum temp for the vapor and I seen the temp climb to roughly 478.. I don't really think that would be detrimental to creating the vapor. If it were 550 degrees, that may be more of an issue. However, while you are trying to get it squared away would it be possible to simply flip the toggle switch off as soon as you reach temp for a few seconds and click it back on again (would take some experimenting in itself)? Pain in the butt since you just want it to work the way it should but I have no experience with these controllers at all to help much more than that. Thanks for sharing!

@JCsBees 5 лет назад

I think I am gonna keep tweaking settings until I get it right. It is a pain in the butt but it will be worth it once it's set right.

@garyjolly5560 5 лет назад

Jason. First off thanks for another great video. I also built a provap last winter. It was a fun project but i also have had problems tuning my inkbird. one site that was really helpful was (barley and hops brewing)tuning my inkbird) one question about yours holding temp. How much alum. Mass do you have in your cookpot.ive played with diff size mass and temp.im thinking a little more mass might help you hold temp better. Im still trying to fix tube clogging problem. Looks like looks like your vapor tube leaves bowl at top mine goes thru alum mass then ninetys and goes out bottom side and still has clogging problem.

@JCsBees 5 лет назад

My base is decent sized you just can't see most of it due to copper coupling. I was having trouble with the heat transferring to the steel bracket base but a few washer used for spacers has solved that issue. My tube does come out toward the top, it's about 1/2" from the top to allow room for the cap.

@Shakingstevesallotment 4 года назад

I like anyone that makes stuff rather than buy in, here in uk lots of beeks use OA, I myself prefer fogging my bees with food grade mineral oil, being a pest controller I already had the smoker machine, but they are easy to make, both videos can be found on my channel should you care to watch, fogging of course is much quicker.

@stephendelsignore6198 3 года назад

Very cool thanks

@incubatork 5 лет назад

For those that have a PID controller without autotune this might help you get somwhere near newton.ex.ac.uk/teaching/CDHW/Feedback/Setup-PID.html at the botom of the page there are links for further reading.

@chrisgambrell8618 5 лет назад

I used a MyPin T series controller instead of the inkbird and I dont have that much temperature fluctuation with it. I have my k type temp sensor between the bottom of my bowl and a washer which is all held to the frame with a 1/4 screw. I noticed that you have yours in the side of the bowl, not sure that has anything to do with it or not.

@corymad1 5 лет назад

I use the same. Works great.

@reelinhuntin 5 лет назад

My Provap 110 is set for 230 degrees. It does also rebound and climb to 245. This is the expensive factory model. Maybe it'll give you a baseline to compare fluctuations and determine if yours is equivalent to the factory specs.

@chrisbgarrett 5 лет назад

Yup,so converted to farenheit its 446f and climbs to 475 before clicking off.

@chrisbgarrett 5 лет назад

I got so frustrated with my homemade vap I had to just put it away. I didn't have problems with temperature. I just used the Celsius settings as it came and set to 230. It dipped down to 195 and then back up to 242 before clicking off and maintained at 230. I'll see what model number I have

@chrisbgarrett 5 лет назад

C100fk02 Rex100

@TheTTimmer 5 лет назад

I followed your build this spring and having the same problem with holding temps it’s shots way over the temp. I am nervous about the oxalic acid decomposing to Formic acid if the temps getting to high, I have heard that can burn the antennas on the bees causing then to potentially not smelling the queen and killing her. For the time been I have switch back to a wand time vaporizer.

@kurtlangeberg1329 5 лет назад

So am I understanding this correctly? You have to add new holes in your boxes for the provap to fit into? Thanks for your videos, they are very informative to watch.

@JCsBees 5 лет назад

Yes that is the case. A lot of people use golf tees to plug the hole when not treating.

@kurtlangeberg1329 5 лет назад

@@JCsBees thank you! Now if I could just find a spare 500 bucks laying around! LOL

@JCsBees 5 лет назад

You can build one for much less than $500. I have around $160 in mine but the cook pot was made for me.

@scotthenderson4376 Год назад

@@JCsBees Then I feel great I just ordered one from JonhO for $203 and his other version is cheaper great video and info

@dinobernardi170 4 года назад

Not sure why but "K" type TC's don't relate to set temps....they always go higher...much higher as you have experienced. Try getting a heater band which has a "J" type TC it doesn't even have to be part of the heater band just tuck it in between the band and your bowl or mount it to your bowl side after all you want it to read the bowl temp not the band itself. Have had the same problem at work when we get "K" type TC's in we automatically switch out to "J" type. Good luck

@gayandonamarasinghe8166 4 года назад

What is the reason to have copper (1/4 inch tube) bent down. Wouldn't it better to have a straight tube so vapor exist much faster before crystalizing? Thanks, and great video!!

@georgegoertzen4723 4 года назад

Thanks for stressing the mask. Our bodies do have oxalic acid in them naturally. In fact gout is the formation of oxalic acid in the joints if your feet - an extremely painful condition more common in the past. I can't imagine how painful it would be to have these crystals tearing up your lungs!

@davidwren1879 4 года назад

Not sure about our bodies creating oxalic acid, but I am sure gout is caused by uric acid, not oxalic.

@beekeepingrealtor2453 5 лет назад

No golden rod here in AZ. But my hives are near Alfalfa fields

@JCsBees 5 лет назад

Interesting the different nectar flows you have vs us. I will have dark honey to overwinter on and yours will be light colored. Nice!

@miltonhamptonii5441 4 года назад

Did you ever do a study on the sumac berries for mite treatment? We're dry in East Tennessee too. Need rain.

@JCsBees 4 года назад

Still doing testing on sumac berries. That video will be coming soon.

@christurley391 4 года назад

I see that you apply your OA treatments through a hole in the side of your hive rather than in the entrance. I wonder if most of the OA is concentrated on just the two adjacent frames rather than evenly dispersed throughout. Have you done any mite washes to test the effectiveness of your treatments?

@Life-ld9ko 2 года назад

I only have band heater of 230 watts. Will it work as effectively as 380 watts? Please do comment? Thanks.

@jeffkotalik6169 5 лет назад

Made same one. Set temp 230 c Over shoot temp 245.8 c 15.8 c (60.44 f) Still playing with the settings.

@JCsBees 5 лет назад

You may want to read "Larry's" comments. One of the comments he left may help.

@sidelinerbeekeeper 4 года назад

Anyone notice how the generator is running rough. Carbon dioxide and carbon monoxide is heavier than air, the wagon's sideboards are trapping the exhaust gases and the generator is forced to breath in it's on fumes causing it to run rough from an improper fuel burn and "flood" itself further adding to the problem with extra exhaust fumes. Oh yeah, make sure to use ACID gas respirator cartridge and spend the extra money on a full face respirator.

@kenthompson6539 5 лет назад

We don't have goldenrod in Ireland so our last honey is ivy honey which sets and cannot be spun out!!

@larva7066 4 года назад

Hey JC, been watching your channel for years. Im a process technician. PID is just the loop control for output control for High amp solid state relay. Pulses output for over shoot and under shoot. Think of it like steering a car on a highway. Anyway I have alot of parts laying around and would like to send you a controller with a auto tune feature that should make life much easier. Problem with manual settings in loop control is changes in resistance on heating element with throw it off constantly. Along with thermocouple milliamp changes. Auto tune can be run whenever to dial her in. How can I get a controller to you with instructions to pay ya back for all the knowledge!

@JCsBees 4 года назад

@Sh Hen I appreciate that you enjoy my videos. If you really want to send me a PID just email me and I will provide my address honeycomb_hill@yahoo.com

@Lsmith-ly2cm 3 года назад

So what was the total cost including tools used in the video ,thank you . Some of the components that are listed arent any good to show the price.

@2hot 4 года назад

I don't think those were in negative numbers at 20:10 but more of a pointing to as in "this - that" means "this IS that". Just thought I would throw that out there.

@garyshaffer68 3 года назад

I would tell u how to wire it but im using a a mypin controller. Model TA4-RNR. There only like 20 bucks on ebay.

@JCsBees 3 года назад

I think I got it wired correctly now but thanks anyway. Where have you been hiding, I haven't heard from you in some time? Glad to see you here now.

@garyshaffer68 3 года назад

@@JCsBees haven't been hiding. Gave up farming turned 63. Just been playing with the bee's. Got around 30 hives now. Been building boxes . bottom boards . and I make my own frames. Get wood off the Amish and plane it down. Living the easy life. Can't beat the price on wood 45 cents a board foot.

@carldaniels4827 2 года назад

golden rod is not all the same. what name of golden rod seed can you buy for nectar production?

@billmitchell7731 4 года назад

Is there other ways to treat for mites for those who only have 2or3 hives for the garden and hobby? That's expensive for a couple hives

@JCsBees 4 года назад

Yes. There is a wand you can buy.

@glaucouswingedgull 4 года назад

And the drizzle method using oxalic acid. Many other methods using formic acid plus many other chemical methods. Oxalic acid appears to be the cheapest method IMHO, and possibly the most effective, also IMHO.

@badassbees3680 5 лет назад

I seen a guy plug his hives with a golf "t" .He also stuck it in provap to clear plugged tip each time, maybe an idea for you lucky provap owners

@charlestrotter9588 2 года назад

Can you give me a parts list please

@bfvader 3 года назад

Any idea how many watts you vaporizer draws?

@trichard5106 4 года назад

Drought in Alabama, very little goldenrod.

@JCsBees 4 года назад

We have lots of golden rod and need rain badly too. I would guess the lack of rain will make for little fall flow.

@jpthedelawarebeeman6239 5 лет назад

The 1/2'' caps are good for single hive body treatments

@cornbreadbees5385 5 лет назад

How much does it cost to build a provap. thanks for the video

@larrytomlinson8553 5 лет назад

cost me 200 dollars to build mine

@Bigbarry20 5 лет назад

But Jason didn't lay out money for the bowl which is the biggest obstacle to a homemade provap

@JCsBees 5 лет назад

Seems like I had around $160 in making mine but the cook pot was made for free by a follower.

@downunderfulla6001 5 лет назад

Great video 🍻🍻 but any facial hair impedes those types of respirators. 👍

@JCsBees 5 лет назад

I understand but this country boy isn't gonna shave. lol Winters coming and it's time for a beard.

@downunderfulla6001 5 лет назад

Jason Chrisman I hear you lol we’re just into spring here. I kept mine to, next year I keep a bit of hair on my bald scone

@DouglasPFresh 5 лет назад

What are your thoughts on treating with supers on?

@JCsBees 5 лет назад

I wouldn't treat with them on. Not worth the risk.

@williamkirkpatrick1099 4 года назад

do you use mite away quick strips

@JCsBees 4 года назад

I have in the past but they get to expensive when you have several hives to treat.

@jimallen1176 5 лет назад

Has anyone thought of building a long barrel OA vaporizer, sort of like a rifle type? It would save your back from bending over & be much safer away from the face. I think it would be faster.

@JCsBees 5 лет назад

The problem I see with that is the longer the tubing the quicker it cools, so it would be extreme hard to get it all to temp.. I do like your thinking though, my back hates bend for too long.

@robertramsey-turner7530 4 года назад

@@JCsBees A problem that is very real. The longer the delivery tube, the more the OA condenses back to crystals. My home made vaporizer has about 3.5 inches of 1/4 inch copper tube and its too long and I need to shorten it

@beehavinapiaries8192 5 лет назад

The provap that I have says the temp should be 230. Why do you have yours so high?

@mikesbeesllc 5 лет назад

that seems very low

@beehavinapiaries8192 5 лет назад

It has been working good for two years now. If you go to the web site for the pro vap 110 you will see that is what they say it should be.

@JCsBees 5 лет назад

Your is set in Celsius and mine is in Fahrenheit.

@mikesbeesllc 5 лет назад

Oxalic Acid vaporizes at 157 C., about 315 F.. The pro vap 100 temp will drop from the 230C start temp when the acid drops into the pot. My Johno EZ Vap drops from about 450F to 330F when the acid hits the pot. Both units recover fairly quickly to the starting temp but by then the acid is vaporized. When building one, worry more about the temp the unit drops to when the acid hits the pot. You want about 160C or 330F.

@beehavinapiaries8192 5 лет назад

@@JCsBees you are correct...I should have known that

@larrylosciale9656 4 года назад

Jason, I haven't built a "pro-vap" but I have built a PID temp controller. I use It for my lead melting pot for casting casting. I used a MYPIN brand PID. It always over shoots the first or second time it cycles but then its able to maintain within 4 degrees F. The secret with mine was to let it auto tune twice. I don't have the settings but if you go to Johnny's Reloading Bench on You-Tube he has a great tutorial on building and setting a PID controller. I think this is the vid where he talks about the settings ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-KFVcrtQ_pdQ.html . One other thought, what if you put more thermal mass into the heater area? Maybe a solid plug of metal on the bottom? Hope this helps some.

@doctortcbkk2027 5 лет назад

Jason- I am a newbie. Just finished my 3rd treatment this weekend. I did not remove my supers. I do not plan to harvest any this year. Leaving it all for the bees. Is this ok? Will it harm Honey?

@JCsBees 5 лет назад

It will not harm the honey for the bees but it will absorb into comb in supers making that comb no good for storing honey for human consumption. I would take the time to remove them or block them off.

@doctortcbkk2027 5 лет назад

Jason Chrisman thx. Should I count it as no good after just 2 treatments coming into spring next year?

@incubatork 5 лет назад

This might help too if you have the same model ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-GruBmsVSnsc.html in your video in the instructions under run option it looks like yours has autotune too, i thought it strange for a Pid controller not to have one thiugh i might be wrong as its oretty hard to read on the video. hope you get it sorted. I'll share my settings once i get time to finish it, don't hold your breath.

@JCsBees 5 лет назад

Yes the InkBird does have autotune. Thanks for the link, I will check it out.