What do you need in a frag tank that is not connected with another aquarium? I want to turn my old tank int a frag tank after I move everything over to the 125. Do I still need to run the skimmer, fuge, and keep LR in the tank? I just don't know if I need to continue to keep the cycle going, keep a few small fish in there or what? It will just have a bare bottom, eggcrate frag rack, and snails in it to keep algae under control.