I have a couple of big tanks, the eight footer is empty and in the garage awaiting the results of careful planning and landscaping....and a piece of glass for the end. My five footer is 5x3x3, I use a step ladder, pool pump and pool vaccum scrubbing brush to clean, this stops fish from being sucked up and scrubs the tank. Unfortunately due to the nature of oscars its a bare tank. I would like to landscape it but at the moment thats not an option with the tempremental state of one of the filters (fluval of course) and the oscars themselves....thinking clearlite, coarse sand, and spa pool pump and filter here. The cost of setting both of these tanks up properly at the moment is prohibitive and I am waiting the good folks on trademe to stop getting greedy and demanding new prices for pumps.