As I was doing some maintenance on my 75g sump I noticed that, for the first time, I appear to have a small family of snails lurking on top of the media. They havent gotten to the main tank I believe due to my sterilizer but I was wondering if theres any type of fish or organism I can leave in my sump to take out any of the snails. I dont really mind them, as I suppose theyre helping break down any waste, but I hear they can damage pumps. If Im wrong feel free to educate me, thanks!