Temperature
As apple snails are tropical animals (except some genera like Felipponea and Asolene, which are sub-tropal snails), the temperature of the water should stay within the 18 - 28°C ranges.
The activity of apple snails increases with the temperature and they are nearly inactive at 18°C, while their gracious movements can only be observed at 24°C and higher. The temperature does not only influence the level of activity, but it as also an important factor that determines the life cycle speed. With higher temperatures, the life cycle (birth to dead) is reduced from 4 years (at low temperatures) to less than a year, while the reproduction rate increases with the temperature.