i keep a 10 gallon tank running for all my miscelaneous purposes. Right now it is curing 10 lbs of LR. Once this is done, I am going to dump that water and put in good saltwater. Basically, then it is just sitting there waiting to be used as a hosp. or quarantine tank. I have a powerhead with a small "filter" attachement...it's a poor excuse for a filter but it works... i also have a heater in there. It's not a bad idea to always have a small tank up and running.