FYI, here are two pictures of the female laying an egg sacs on the
inside of the Eclipse lid:

http://phaseportrait.blogspot.com/20...pple-snail-gol...

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What are you feeding them? Mine never lived more than a week.

We drop several algae wafers into the tank every other day. Otherwise,
the tank has a few healthy plants (e.g., java ferns) and a small piece
of driftwood draped with java moss. We watch the apple snails crawl
all over these, but I don't think they're eating them. In particular,
we don't notice any holes in the plant leaves. Additionally, we've
watched each of the apple snails *devour* a single algae wafer.

When the snails aren't eating the wafers (or mating or laying eggs),
they crawl all over the tank.

We also use the small tank for feeder pond snails (for a freshwater
puffer in a different tank). So, there are lots of pond snails in the
tank. The apple snails *can* eat dead pond snails, and so that's
another possibility.

It's worth noting that now that we have the population problem, the pH
of the tank is way off. We're working on that. Additionally, because
the Eclipse tank is so small and the light is so warm and directly
over the surface of the water, the tank is usually at the upper end of
the acceptable range for tropical fish. In fact, even at night when
the light is off, the temperature seems to hover around 80 degrees
Fahrenheit. I can think of no reason why these conditions would be
*GOOD* for these snails. In the past, in a larger tank with neutral pH
and comfortable temperature, we had no trouble keeping an apple snail
alive.

[ Additionally, we sprinkle some fish flakes and occasionally some
shrimp pellets, but that's mainly for some freshwater shrimp that are
also in the tank. I can't imagine the snails are eating those. ]

My guess is that the algae thins are the thing that's keeping them
alive now.

--Ted