What causes snail die off?
And it is mostly ramshorns. They seem to grow to a certain point have a population exposion then all of a sudden die out (esp. the larger ones). This is terrible for the water (fouling) and is another reason I pull out the ramshorns. Do they have a life expectancy? Seems like the pond snails have an even shorter one while the bigger snails like the nerite and apples have a little longer?
Is it this or does something else cause the die out?