3 Keys To POOL CIRCULATION And RETURN JET Flow | Swim University

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Good pool circulation and pool return jet flow is a crucial part of keeping your pool water clean and clear. And bad water circulation means your water can quickly become stagnant and grow algae. Luckily all it takes for good pool circulation is the right pool return jet placement and some simple pool filter maintenance.
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⏰ Timestamps:
00:00 - Introduction to Pool Circulation and Pool Return Jet Flow
00:25 - How Does Pool Circulation Work?
01:06 - Position Your Pool Return Jets Properly
01:34 - How To Aim Your Pool Return Jets
02:22 - What If Return Jets Aren't Working Well?
02:41 - Keep Filter System Clean And Running
03:30 - How Long Should You Run Your Filter?
03:57 - Clean "Dead" Areas
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Swim University has made swimming pool and hot tub care easy for more than 10 million homeowners. And each year, we continue to help more people with water chemistry, cleaning, and troubleshooting. We know taking care of a swimming pool or spa can be difficult. And it’s hard to find a trusted source of information. We get it! This is the reason we created Swim University.
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27 июл 2024

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Комментарии : 155

@SwimUniversity 3 года назад

We hope this helps you with your pool circulation and pool jet flow! And if you need more help with pool maintenance, check out our free Pool Care Cheat Sheet at www.swimuniversity.com/cheatsheet

@mkdsk101 3 года назад

So I have an above ground pool and my skimmer is to the left of my return so do I still point my return jet towards the skimmer?

@66508mvys 3 месяца назад

Can a pump to above ground pool be raised to the same height or just below the out flow to the pump

@MoMartz09 2 года назад

Fantastic info! I'm a new pool owner and this helped out a ton. Thank you!

@JM-rs2hc Год назад

Thx Matt!!!!! You're my go to when it come to taking care of my pool!!!! Much appreciated!!! keep up the great work!!!!

@teamjensen3 2 года назад

New salt pool owner AND NEW SUBSCRIBER!!! Thank you! Thank you!! Awesome video: short and to the point!!

@SwimUniversity 2 года назад

Glad it was helpful!

@kiney0713 2 года назад

Love this! Makes so much sense!

@KapBennyTV Год назад

Very nice video! Direct to the point! Thanks

@FUNKYFRESH707 3 года назад

Thank you!

@jacobalderman105 Год назад

Great video thanks!

@Moho62 2 месяца назад

I've had my inground pool for 19 years. I never could figure out the Jet placements. This is the first video I've seen that easily helped! Thank You!

@SwimUniversity 2 месяца назад

Glad it helped!

@milkylicker6963 Месяц назад

Me too

@das113 3 месяца назад

Great explanation, thanks! 🙂

@stevewright6982 2 года назад

I just got my pool running in this video was very helpful

@misteeruiz6902 Год назад

Thanks. New pool owner 🤙🏽

@oslerpereira6380 Год назад

Nice thanks for video

@Nguyen_Realty 3 месяца назад

Love your videos, thank you so much How do you know how strong the jet flows are supposed to be? The jet flow strength seems to be coming out as if you were to turn on a sink faucet halfway

@reefhustle3935 3 года назад

Do a video on pool covers like the pvc ones

@edwardippoliti626 Год назад

If you have a cuda hooked up at a return ,would it burn the pump up if you took it out ,even if you had poor or no circulation during pump operation for two weeks prior to pulling the cuda ? My friend is trying blame me for the pump ,says it's my fault ,because I pulled the cuda out, but there was little or no circulation for over 2 weeks ?

@jonmalone75 Год назад

My pool is 30 years old. Its an 18x36 with 2 jets and a skimmer all on the same wall. It has a jet about 3 feet from both end walls. Which way should my jets be positioned? I cannot seem to get much of the debris into the skimmer. Thanks

@webneko9842 Год назад

I am brand new to owning a pool. I bought a house with one. It's an inground pool and it has 2 jets that keep the water moving and the drain in the bottom. There are also several places where there are these white tubes that extend and when I open a valve seem to be a sort of jet themselves. Do you know anything about these?

@Angel_268 Год назад

Is it possible to turn one eyeball return into two with a Y adaptor or something?

@jodeci888 2 года назад

Another great video! I have a 15 by 30 oval with one return and skimmer is only about 18 in away, should I face it down towards the skimmer or down away from the skimmer?

@NorthJerseyFooter 2 года назад

Away

@dantadeo6496 2 года назад

Away to circulate if you point it towards the skimmer then you just blowing debris back to your pool and not into skimmer

@THEJavelinX 2 года назад

Do you have a link/ recommendations for adjustable return jets nozzles? My pool only has non-adjustable return jets+ a fountain

@drdrew3 2 года назад

Many jets that appear non-adjustable are just frozen in mid position. Even under close inspection mine appeared to be in fixation position straight ahead. One good knock with a rubber mallet and the pieces separated. Worth a try before you replace them - saved myself a bunch of cash

@ChitoWorld 3 года назад

Do you have videos for 900 gallon pools ?

@ScottGibbs Год назад

I'm way overthinking this, but I'm thinking of building a small pool to swim laps attached to a tether. Probably about 7' x 10', so I'm sure one return jet would be enough. Would it make the most sense to put the skimmer and return on the same wall and point the return away from the skimmer? Would that create enough circulation? Thanks for the videos.

@themotherfdude8891 4 месяца назад

Yes otherwise return would push water into* the skimmer. Kind of common sense

@leopilapil7752 Год назад

how much the cost of felter set including pump, thks

@rodneyolsen8555 3 года назад

I have an older plaster pool with 1.25 inch return lines. Unfortunately, I cannot find directional return jets for 1.25 female fittings. Any suggestions?

@jimkline6285 3 года назад

Your saying you have 1 1/4" threaded return lines, most are 1 1/2"?, or is it smooth pipe cut off at the wall?

@wudgee Год назад

I have the inlet valve quite close to the skimmer in the deep end. When sweeping the muck gets blown back to the shallow end and it seems the current is just going from the inlet to the skimmer and is directed up to the surface. This is how the pool company have done it and it can’t be right. There’s no circular current to enable the skimmer to work. I can’t seem to move the direction of flow and scared to break something. I’ve got muck on the surface of the pool despite using a net and muck at the bottom all he time.

@rarescancean2573 2 года назад

Your video is very interesting!!! But I have a some question for you because I need some information for my swimming pool. Can you explain me: - How do you decide which SAND FILTER, PUMP, PVC PIPES is better for swimming pool? - What mathematical formulas did you use to dimension it? - Can you help me because I need to renovate my pool and I need to understand if my sand filter, pumpb and pvc pipes are will be good? Thank you!

@themotherfdude8891 4 месяца назад

Sand filter sucks. Get a cartridge.

@RobinGKT 2 года назад

New Subscriber. Thanks for the video. So all the jets are return jets, they all have the same function? What are the jets on your diagram you have listed as stop jets? Thanks, Robin

@roysingh576 2 года назад

I have the leaf catcher attached to one of the inlet water valve. Is this a good idea

@drdrew3 2 года назад

As long doesn’t cause too much pressure drop the lead catcher is great. Need to empty it regularly to maintain good flow thru. It keeps debris out of the pump basket and filter which is a big time saver (and extends filter life). I put a filter sock in mine and cartridge filter is grateful

@LatinMaximus 3 года назад

Is scrubbing the dead areas necessary if you have a pool cleaner (barracuda). I only do behind the ladder and the bottom of the pool floor.

@SwimUniversity 3 года назад

As long as something is cleaning the dead areas - either you or the barracuda - then you're good to go. Just make sure it's getting into the common areas we mentioned.

@drdrew3 2 года назад

In pool vacuums also have dead zones where they don’t reach. Especially around steps and at farthest length of hose. There are the first areas where algae will grow. I still brush weekly and can see fine dust in certain random areas. Getting this suspended back into the water column makes it easier for the filter to remove. Also a good time to add clarifier every few weeks. Plus it’s great exercise in the sunshine!

@nadavvaknin 2 года назад

Does the pump and filter must be at the pool level or can you position the filter and pump on a higher ground above the pool level?

@drdrew3 2 года назад

It’s always best to have the filter mounted a little higher than the pool surface. When the pool is below water level when you service the pump water will flow downhill with gravity and drain the pool. And because side leaks are more common it will drain from there as well

@tonybatrof2526 2 года назад

why is dirt shooting out of return jet when filter first turned on? I have a sand filter with a side mounted push/pull valve. I do back wash regularly and keep the pool chemically balanced. Could there be broken parts inside the filter?

@seaofdreams73 2 года назад

That’s my problem too.

@drdrew3 2 года назад

Broken grid

@themotherfdude8891 4 месяца назад

Yep. Broken grid inside filter. What you do is get a hammer and put a big hole in it. Then take it and throw it in the trash and buy a heyward cartridge and be done.

@aaronbowes1176 Год назад

Water return - in-floor cleaners (popups) vs standard wall water return: Is it better to have the wall water return off so full pressure is sent to the in-floor cleaners?

@themotherfdude8891 4 месяца назад

If the pool came with floor cleaner and side return, use them all. That’s why they were installed. To work together. Not pick and choose

@maxpainemax2726 10 месяцев назад

Hello. What is the best pump hp on a 16" sand filter tank? Thanks

@themotherfdude8891 4 месяца назад

Get rid of the sand filter and get a heyward cartridge with 1.5hp motor if you find one

@ryannichols8315 2 года назад

I have a 28 ft above ground pool. I think it's 12,000 gallons. Not that the size has much to do with my question. I just realized on my return hose, right before the fitting that connects the hose to the jet, on the outside of the pool is a valve. It appears to be an air valve. It has a cap on it. If you move the cap just a little it allows air to mix with the return water and bubbles come out the jet. So the air doesn't go through the system. What is that for? And is it helpful or harmful to use? I've tried to find out but everything that comes up online refers to fixing an air leak. This isn't an air leak, it's designed to allow air in right before its shot into the jet.

@edgar916911 2 года назад

I have the same thing as you. I have a venturi tube in my pipe leading to my return jets in my pool. Not sure what that is for. Just saw it was leaky. Not sure if I could replace with a pieve of regular PVC or replace the venturi. Have you found anything in regards to that?

@ryannichols8315 2 года назад

@@edgar916911 Nope. Mine doesn't leak though. I can remove the cap and it still doesn't leak. But unfortunately no I haven't figured of what it's all about.

@dantadeo6496 2 года назад

That’s for spa features like a hot tub it’s just for bubbles

@cwc8979 Год назад

⁠I have an inground swimming pool and right now have debris on the pool floor around the main drain in the deep end…..would that restrict the water flow coming from the pump into the return lines into the pool? I’m in the process of cleaning our pool……seems like once I prime the pump the water flow is going fast then it tends to slow down some over time

@themotherfdude8891 4 месяца назад

You have a clean and not old filter? And yes it’s not great for debris to sit on the drain. But it shouldn’t ever cause a difference you could see unless it’s a bucket, toy, etc

@themotherfdude8891 4 месяца назад

Also. Your pump is priming at higher rpm to get going, hence the word prime, then slows to whatever rpm it is set to. Since you have a variable speed

@magdiel123456 3 года назад

Can I put the solar cover on my pool to warm the water while I get the pipes open and get it ready?. It's mild green very little algae as of now

@Dakobah20 Год назад

sorry no response, what did you find out?

@themotherfdude8891 4 месяца назад

Solar covers may add 2 degrees on a hot day. Literally waste of money

@CyncalKaos 3 года назад

So I have a Question. I have an Inground pool that is 18 ft Wide and 36 ft in Length. Depth is from 3 ft to 8.5 ft deep. It only has 1 skimmer and 2 returns. Is this enough for this pool.

@SwimUniversity 3 года назад

It depends on how much debris you get, if you keep it running all the time and if your pump and filter aren't kicking things back into your water. If things are running smoothly, you're fine!

@CyncalKaos 3 года назад

@@SwimUniversity thanks for the response. I cannot get this pool to clear from Algae. I’ve shocked it multiple times this past week. Added chlorine by the gallons. Cleaned and bought new filters. I’m at a loss. I’ve tried algaecide, vacuumed and keep the skimmers cleaned. Had my water tested and it still won’t disappear. All I can say is HELP

@christianwoods8925 3 года назад

@@CyncalKaos Throw in some floc out

@skeletonsflop8904 Год назад

Hello. I’m just asking out of curiosity but what’s the difference between a pool return jet and a pool stop jet on the picture?

@Frenojan007rr Год назад

Well the brushing part, i brush my pool every 2 days

@themotherfdude8891 4 месяца назад

No need unless you have no circulation or under hp pump or crap filter.

@sikandarkumar7163 Год назад

Sir suming pool me Kitna ka pipe Dala gata ha

@mannygonzalez4492 Год назад

Just got my pool finished I also had pop-up cleaning heads everytime I pull kicks into cleaning mode I get lots of air coming out of cleaning heads is that normal? Pool company tells me that it is because I have an ozonator connected to my system that pushes air .

@themotherfdude8891 4 месяца назад

Well there ya go

@sdimario 2 года назад

great videos, i've watched most of them already. I have a 4 yr old Hayward de filter. when I recirculate the pressure back to the pool is great. When I backwash and then filter, pressure is good for about 15 min, then it begins to slow. my filter cartridge was cleaned this past weekend. I can't figure out the issue. Everyone i speak w/ says clean the cartridge........IT'S CLEAN!!!!

@gee6444 2 года назад

I have a Hayward de filter also and I have this same problem did you figure it out yet

@dantadeo6496 2 года назад

Maybe you feed too much de powder or maybe that’s the normal pressure if you want more you need a stronger pump

@dantadeo6496 2 года назад

Or just open up the filter and clean it manually

@dantadeo6496 2 года назад

If you just backwashing it then you will need to open it up and wash the grids or fingers

@dantadeo6496 2 года назад

7+ years in the pool business

@MrEye4get 2 года назад

My Pool Installer tells me I don't need main drains. They use on a skimmer (at one end) and two return jets (opposite end) for a 7m x 4.2m x 1.3m rectangular fiberglass pool. I feel they are doing as little as they can (including a small filter and pump) to make more money. Does that sound right?

@jack8u27 2 года назад

For something that size, that's not the end of the world. But a properly sized pump and filter with main drains would definitely make keeping it clean so much easier for you.

@themotherfdude8891 4 месяца назад

It’s a fiberglass pool. Not a lot have main drain

@stashoski2675 2 года назад

Ok what position do you put the Return valves. There’s one valve the main line comes in from the bottom and scammer. You could turn one line off or the other or put in a middle for both where do you put it. And amount of time to run filter. And speed on A variable speed pump.

@dantadeo6496 2 года назад

Put skimmer wide open and main drain half way open

@dantadeo6496 2 года назад

8 hours plus no less then that

@dantadeo6496 2 года назад

Speed depends on your pressure I usually run it over 2000 + but if you can get the skimmer sucking and return flowing fine on less speed than go for it

@lenasjw67 3 года назад

I have a question, I have a round above ground pool and I’m not getting good circulation in the center of the pool. I have the return jet pointed downwards but it’s still not circulating the center of the pool. Everything is flowing properly not sure if I need to position the return jets at a different angle

@magdiel123456 3 года назад

I had that issues point the return nozzle to the right or left to circulate in around motion

@lenasjw67 3 года назад

@@magdiel123456 pointed to the right or left away from the skimmer?

@magdiel123456 3 года назад

Either direction but make sure they both are pointing in the same direction you want to make a swirl effect

@NorthJerseyFooter 2 года назад

@@lenasjw67 point away from skimmer to create a circular flow so debris circles pool and runs into skimmer

@themotherfdude8891 4 месяца назад

Why point into the skimmer? That would make no sense. Come on guys. Use the grey matter.

@seaofdreams73 2 года назад

Can you help me understand why dirt is coming out of my return jet when first turning the filter pump on. It’s like I vacuum up all the algae n dirt and it comes right back in the pool. I have an above ground pool with a sand filter.

@themotherfdude8891 4 месяца назад

You have a crack or hole in a pipe underground. Common sense.

@themotherfdude8891 4 месяца назад

Or your filter is garbage. Get a cartridge and replace it yearly depending on size and brand. Don’t skimp. Clean it often as needed. Takes 10 minutes

@mr.fix-all Год назад

I have a pool that has an old pump motor, and old filter sand system. After a few hours of it running strong, it then starts to barely blow any water out of the filter into the pool. I replaced the pump and the sand, after a few hours it does the same thing. I backwash, rinse and put it back to normal operation. It will work for a few hours and then barely have any circulation again. To note the motor never cuts off on the new pump, all skimmer baskets including the pump skimmer basket is clean and doesn’t have any leaks or air bubbles. I have a very slight leak from the multi valve port ring to lock it into place but I didn’t think that would be my issue. Anyone have any thoughts?

@gabet3754 Год назад

You have a restriction in the return line before the filter. It’s restricting flow to the pump. You can snake it with a plastic line to break it up

@themotherfdude8891 4 месяца назад

Throw the sand filter in the garbage and get a heyward cartridge

@DZRIDEZ 3 года назад

Just opened my pool today and after putting everything back together, when I turn on the motor, water is not being sucked in and my filter is not getting any pressure. I took off the lid made sure everything was good, place it back on, and clamped the filter shut. Turned on the motor once again but nothing. :(

@SwimUniversity 3 года назад

We have a troubleshooting guide here that may help: www.swimuniversity.com/pool-pump-not-working/ You may need to prime your pump.

@trevorstevens3699 3 года назад

you should take of the lid to the pump and fill it with water then fire it back up. its called forced priming. if that doesnt work put a hose and let water urn into it for a few minutes.

@drdrew3 2 года назад

Your pump lost its prime. Just put a hose (or dump a bucket of water) into the pump basket until it overflows. Tighten the lid and fire up the pump. Matt have to repeat a second time. Very common when pump is dormant for long periods and tiny air leak lets water slowly siphon back into pool

@k8tallison250 2 года назад

I’m so confused. Literally every article/video I’ve seen says to point jet AWAY from skimmer. So, my return jet is right next to my skimmer. I only have one and I keep it pointed down and away. Should I move it the other direction?

@jres9692 2 года назад

How many return jets? You want to create a circulation process to where the water can make it’s way to the skimmer. Think of it as a clock and picture your skimmer on a certain number on a clock. My skimmer is at “7 o clock” and my jets circulate clockwise from “10, 1, 3, 4, 5 o clock”

@k8tallison250 2 года назад

@@jres9692 I only have one. I have it pointed down and away from the skimmer

@NorthJerseyFooter 2 года назад

@@k8tallison250 that is the correct way. Aim away from skimmer to create a whirl pool

@systolic7483 2 года назад

This video says the opposite. One jet, towards the skimmer and down. Multiple jets away from skimmer and down.

@k8tallison250 2 года назад

@@systolic7483 that's what I'm questioning. Everything I've seen/read says one jet, point AWAY

@marcodeluca4068 3 года назад

So I am battling with creating a good flow for the pool surface

@drdrew3 2 года назад

I aim my 4 jets at a slight UPWARDS angle in a counter clockwise pattern. You can clearly see the surface water make a circular course and head directly for the skimmer. As a result the surface has zero floating debris. The deep / shallow circulation is fine because the in-pool vacuum removes the cooler surface from the pool bottom and the jets return it at the warmer surface. Your main drain can do the same thing but less efficiently because it is stationary

@Art_64 2 года назад

Didn't understand. I have two nozzles on one side.of the pool and two at the stairs on one end. The single skimmer is on the opposite side of the two nozzles. How should the four be pointed?

@Lughnerson 2 года назад

Make them point so as to create a whirlpool effect, all in the same direction, slightly downward. When jets are pointed too high they bubble and ripple the surface which makes it hard to see when vacuuming.

@drdrew3 2 года назад

@@Lughnerson If you point the nozzles at an angle towards the surface you get wonderful (counter) clockwise circulation of debris directly into the skimmer. Considering that vacuum for just 20 minutes a week but you run the pump for 3,500 minutes a week it’s a complete non-issue. Alternately you can just turn the pump off for vacuuming and back on immediately afterwards. Having zero debris on the surface is great when you are in the pool. And being able to visualize the whirlpool effect from outside the pool is very reassuring. The deep to shallow circulation is accomplished via the main drain (or in-pool suction cleaner). No debris on pool bottom or surface and complete circulation. The pool is so clear it looks empty

@asianangler 2 года назад

how many returns typically needed for a residential pool?

@drdrew3 2 года назад

For a 12-15,000 gallon pool 4 return jets are usually adequate for good circulation. Any pool designer will do some serious math to determine flow rate, pump size, pipe diameters, skimmer, drain lines jet nozzle openings in addition to number of return jets. The drainage capacity needs to equal the pump output - harder to fix after it’s built. Best to leave it to the professionals

@themotherfdude8891 4 месяца назад

Most builders guess so pools can be wildly off from neighbor to neighbor

@joshsmith7692 2 года назад

I have a cartridge filter pool, also I have never had a pool before. But this thing is expensive AF!!! I can't vac the dead algae from the pool because it blows right back in! I have tried to wash the filter to no avail. I have a strainer basket net(panty hose for skimmer basket) on the return jet and on the skimmer basket. It seems like I am going to need a new $100+ filter for every 1/4 of the pool I vacuum. This blows balls!!

@drdrew3 2 года назад

Mechanical filtration alone is NOT a cure for algae. You need to kill the algae chemically and then filter it out. Algae doesn’t grow in a pool with proper chemical balance. There are plenty of “clean to green” videos the show the steps. This particular video is geared for optimizing a non-problem pool. Your pool circulation might be just fine - get the pool clear and then get it balanced. The circulation part isn’t hard or complicated. Best of luck

@joshsmith7692 2 года назад

@@drdrew3 that's the thing, I have had it "clear" and everything dropped to the bottom but I can't vac it out because 4 swipes with the vac and the cartridge filter is full and blowing out algae. I maintained a balanced ph and chlorine for a while and then all of a sudden I can't hold either. I'm scratching my head on what to do and my buddies are telling me to drain it, clean it and start over. I have shocked, like power shocked-double or more the amount for the size, it so many times and the chlorine is still less than 1ppm. I'm starting to think the 20-30min drive to the lake would be worth it.

@mikemilam525 Год назад

@@joshsmith7692 If it's that bad, vacuum on waste. Put the dead algae out on the ground.

@themotherfdude8891 4 месяца назад

It’s a you problem. Not the pool.

@joshsmith7692 4 месяца назад

@@themotherfdude8891 oh thanks! That solved all the issues

@smibrahim19 2 года назад

What about the main drains!

@themotherfdude8891 4 месяца назад

What about them

@098cpt 3 года назад

I always wanted to know why in pool field they call the water supply the ' return' while every engineering system it's called a supply... Hvac, plumbing, fire protection,

@nycupperes 3 года назад

The other side is called “suction side.”

@patagualianmostly7437 2 года назад

Any water line, above 0 psi is a return....0 psi is at atmospheric pressure.... but...before the pump...the pressure is below that...and so it becomes the supply. It's simply "Before and after the pump". Plumbers/HVAC/Firemen work AFTER the pump... to them, it is a supply.... BUT! to the pump operator....well... he's the man, isn't he! In Pools... it's water being RETURNED to the pool after pumping and filtration..... It's a closed circuit. OK?..."The water is returning to the pool..."

@drdrew3 2 года назад

We’ve always just said suction side and pressure side - never had any confusion.

@StartVisit Год назад

thank you for skipping heater 😮

@wafelhausen 2 года назад

I have 3 jets in the pool, 1 at the deep end and 2 at the shallow end, the deep end jet has strong flow while the other 2 are weak. Is this normal or should all the jets have pretty much equal flow?

@Art_64 2 года назад

Looks like Noone is answering us

@Lughnerson 2 года назад

The deep end may be the first jet in the return line so it has the most pressure. As long as they are all working and pointing the proper direction the circulation is fine.

@drdrew3 2 года назад

Most jets can accommodate different size exit openings. A set of plastic washers often comes with the jets to fix your problem. You can balance the flow by decreasing the diameter of the exit hole on the most powerful jet. If you lost the washers pool stores have them. You can use PVC cement if not a perfect fit for your nozzles

@sudalaikani1980 2 года назад

any swimming pool maintenance company address

@samanthapowers1857 3 года назад

What PSI should my pump be registering as normal ?

@xLPDz 2 года назад

Remove debris from skimmer baskets and pump basket, then backwash. Whatever number you see on your pressure gauge after back washing is your starting pressure. Should be anywhere in the range from 10-20psi

@drdrew3 2 года назад

Once you determine the baseline pressure of your system make a note of it. When you reach 10 psi above the baseline it’s time to clean the filter media