Nice and colourful tank Bananas! I used to have several apple snails but had to get rid of them as they make a lot of mess and tend to pollute the water. One thing you might be interested in is that the eggs are almost always sterile, no eggs that my snails laid over the course of a year ever hatched. At one time I had about 7 apple snails, some betta's and bristlenose catfish in a tank and I spent the majority of my time watching the snails, they are quite peaceful and majestic, very relaxing to watch. Also, mine never ate the plants (they're not really renouned for that) however they ate my catfish's algae tabs! The fish had to get in real fast or go hungry!

Good luck with it all!