My fiance has a 10gal tank that we put live Moneywort in. Well, about a month later, BOOM! Snails everywhere, and I mean, everywhere. We tried buying a Clown Loach to get rid of them but I think they were reproducing faster than the little guy could eat them. We gave him back to the pet store and are now looking for more ideas. He is willing to tear down the tank. I'm thinking we will need to trash the spong filter. He is going to throw the substrate out but has larger river rocks that he would like to keep. Any suggestions on how to make sure the rocks and fake plants are snail free for when we set the tank up again?