it appears to me that the 3 snails i put into the JD tank were eaten, so i took the adult snail out of that tank and put it back into my mbuna tank. however, i think that my mbuna have been eating all the new hatches because i have dug in their gravel and found only one or two more snails. so i was wondering how long before the adult snail lays eggs again? and how long before the juvi snails are big enough to lay eggs?