I have two apple snails and the one has been acting a little odd lately. In the past couple weeks it has gone through a pretty impressive growth spurt and now it keeps climbing on the tanks filter and even trying to go inside it. Does anyone know why it keeps doing this? A picture of the filter I have is below, the snail keeps trying to go where the filtered water is coming out although its shell won't let it get very far, then it continues to climb around and on top of it. I usually put it back into the water myself, but only to find it back on the filter in a few minutes.