Originally Posted by Creat
Whats your guys best method for artificially hatching? I tried it once and ended up with only 10 grown fry at the end. I put them in a container with less then 3 inches of water and an airstone to keep em moving toward the surface if they fell. And once they became free swimming just continued on like normal.
I only use a small plastic bowl (from a cereal - diameter about 10 cm ) with no air stone. Fill it with about 2 - 3 cm water. I move the eggs with a spoon and try to spread them as best I could (the eggs should float but don't worry about the ones that sink).
I float the bowl in a warmer tank, cover the tank where the bowl is (or you could cover the bowl only if it doesn't tilt). in a day or two, they should hatch. Some eggs will fungus and must be removed because newly hatched fry might get caught in them and IMO bad eggs will foul up the water (be extra careful because you will pick up fry along with bad eggs - I usually remove bad eggs to another bowl first then when 100% certain there's no fry, I throw away the eggs). You might not get all the bad eggs at once (at least I don't) because some may not fungus enough to be lifted (I use toothpicks - but you can use tweezers).
Then I add about another inch of water. If the fry are gathered in one area, I would remove some water before adding to reduce toxic substances such as ammonia that may build up due to rotting eggs. Then I re-float and cover and wait till they become free swimming. And finally they are acclimated into the grow out tank.
My worst hatch is about 60% and my best is about 90%. IMO it depends on whether the eggs were good/bad in the first place and how bad fungus grows on bad eggs which will affect good eggs (that's why I spread the eggs all over the bowl).