Hi! I got some live plants a while ago but just today I noticed some snails and something else at the bottom of the tank. (Previous to seeing these I only own one Gold Inca Snail). Anyways today I saw some clear and very small snails in the tank. The biggest one I saw had a curved shell I believe. At the bottom of the tank I saw some brown dots moving around and there seemed to be quite a lot. Does anyone know what these are and how I can get rid of them and also prevent them? I also have guppies in the tank. Would it be best to just restart the whole tank?