I took pictures of the water quality before every one says its overcrowded. I am going to build a new tank soon. The tank is six feet long and the wave maker just came on so I can show what it looks like when stired up. Any improvement short of a pool pump and filter. I think its good for that many fish I test often with the test strips I have no build up of waste. With the back wash I just back wash twice a week and refill it. The power head and wave maker stirs the sand. Some times I have to rake it back. For lighting I have a reef setup metal halide bulbs. One 14000k one high pressure sodium and a actinic light. Is this to much light I heard they tend to loose there colors. I was trying to prevent this. Was not sure if it was from poor nutrion or the lighting. So I wanted to cover the who spectrum. It also gets alot of natural light. Enought to grow algae without the light on.