I've got a 55 gallon tank set up with african cichlids, great rangeof colour and interesting to watch them chase eachother around!. i think it really is an extension of fishing. everytime i see them i think of that bass that might be hiding so i can lure it out! great fun! i recently installed 2 red and one green LED lights in the tank right behind bubble stones. the air comning up looks like fire with the effect! really cool to look at when you turn the lights off!