With apple snails you have a few easy steps for breeding. You need a male and a female. They are not asexual like other snails. leave an inch or two of tank above the waterline as they lay eggs out of the water. keep the temp around 80 i kept mine at 82. they will eat, grow and breed more rapidly. feed them well. they breed when the temp goes up, and food is more availible. mine ate, frozen green peas, carrots, cucumber, algae pellets and live plants. keep a lid on the tank to save moisture so the eggs don't dry up. if you do all of this, the eggs will hatch in 2-3 weeks.