I am pretty sure they are salamanders, not tadpoles. Where do they come from, and why? Would it help to change a chemical balance? Keep the chlorine high? or do we just have to live withit in the cold weather? At least we aren't swimming!!! Surely someone has overcome this problem. there are hundreds of them. If I run the polaris, I have to clean it out each day, and it still doesn't get them all.