Due to an extremely hostile landlord and escalating legal dispute, it looks like I will temporarily have to drain my tank of water. I don't want to lose all the time and effort I put in towards cycling the tank. Is there a way to keep the rocks and sand (which I understand is where the needed bacteria reside) outside of the tank, until I can resolve this? If I keep rocks and sand in a bucket will that be sufficient? Would I have to start adding ammonia periodical to maintain the bacteria?