My Nano Cube is finished cycling now, but here is the problem. In setting it up, I added about 4 fist sized pieces of rock and a couple of scoops of sand from an established tank. About a week and a half later, the fish that was already in that tank died from what was apparently brook (possibly velvet, but it looked like brook from the pictures I found).
So since she was obviously already infected when I took rock out of that tank, I am starting my new tank off with a fallow period. I know I can't add fish during that time, but are snails or shrimp okay to add, or will any nastiness hang on to them until I add the fish after the fallow period?
So since she was obviously already infected when I took rock out of that tank, I am starting my new tank off with a fallow period. I know I can't add fish during that time, but are snails or shrimp okay to add, or will any nastiness hang on to them until I add the fish after the fallow period?



