Here this should help
It's important to keep the eggs in a moist, but not wet environment. Never keep these eggs under water (this will drown the embryos)! Keep the temperature between 18 and 28°C (65-82°F). The higher the temperature, the faster the snails will hatch.
After 2-4 weeks (depending on the species and the temperature, 14 days at 25°C in the case of Pomacea canaliculata) the first little snails should appear. If they don't after 3 weeks, you can try to help the young snails. It might seem rude, but it works: just break the clutch in 2 - 3 parts and those in the water. You can even wash the snail out of the clutch by moving the broken clutch parts trough the water. Note that this isn't necessairly when the moisture of the air is sufficient.
If you don't see little snails after breaking a 4 weeks old clutch, it can be that the eggs aren't fertilised or that the air moisture was too low. In the latter case the yolk is very thick or the eggs are completely dried out and filled with air. You might want to wait until the snails appear on the natural way (it can take several days before they all are hatched), but keep in mind that if the clutch isn't kept moist enough, the young snails won't be able to make their way out and subsequently die.
I got that from
http://www.applesnail.net/ go there and look under the care section as your mystery snails are really apple snails.
The care sections has everything about the eggs and the little baby snails. Hopefully you'll get some cool colors!
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