This is a pretty detailed rundown of how I handle corydoras spawns once the eggs have been laid. I use this same process for the 30+ species I'm currently breeding and it will work for pretty much any species.
Thanks, this was really good. I managed to get maybe 6 albino cory eggs before the fish ate them this weekend, and I was not set up for it! The visuals with this are very helpful.
Thanks for sharing . Have you breed black Venezuelan? Any different than others. Subscribed. Thanks for the tips. Supporting your channel from mines @Joy of fish keeping
I 'feel' like I get better results. With corys, the mop spawners don't really produce many eggs at a time. A pretty good size spawn will be maybe 40 eggs, unlike rainbowfish that will give you 200+. So with the rarity of the ones I keep, I don't want something like an unfertilized egg getting fungus and spreading out to other eggs. MB or alder cones or the like will only be able to help so much in that case. So I would at least pick out the obvious bad ones if I were to leave them in the mop.
The aging I'm referring to is when you allow tap water to sit for a day or two with an air stone so the ph will stabilize. In my area, the ph right out of the tap is around 7, but once it's stabilized, it sits at about 6.2/6.3. So I have a couple of containers that hold the same kind of water I would use for a regular water change, but it just sits there in the fish room along with an air stone and a bit of crushed coral (to give it a buffer). That's the water I use so I don't deal with things like the ph swing from tap water to tank water.
Are you referring to the ones I hatch the eggs in? If so, they are 32oz paint mixing cups. If your referring to the ones that float in a take, I make those myself.
I used pool filter sand from home depot. The brand is Quikrete. I like pool filter sand over many other types because the grain size is a bit larger so it doesn't really fly all around in the current like really fine sand.
Can I just remove the adults? If they make it to fry stage, what then? I have two albino and one brown. Some eggs are on leaves and still there and it’s been at least 3 days. But the adults are still spawning.
Sure, if you have some other place for the adults, you can just remove them. Depending on where they spawned, you might want to add an air stone near it so get some extra current to keep water moving across them to help decrease the chance of them fungusing. It can be a bit different per species and water temperature, but you will generally have them hatch in about 4-5 days. If the tank is well established and nothing else is in it that might eat them, the fry should be ok on their own. It would be good to feed them some tiny foods, but they will be able to graze off of the assorted things naturally living in an established tank.
They are actually something I make for myself. I have had enough interested in them recently that I'm in the process of attempting to produce them for sale, but it will be a few more months still.
