Currently running 55 hex acrlyic tank 400 watt 10K metal halide with vho antinic, oak stand and custom built oak canopy, I keep mainly acros, 1 dersa clam and a frog spawn, open brian, a yellow leather. I really think these tanks are alot more appealing than standard designs. Just my personal preferance. Have had it up for about 1.5 years and I do have to say I would really like to do a larger tank soon, I will probally be forced to go with a convential tank next time because hex tanks with 100 plus gallons just take up too much floor area or they are too deep.