I am having a hard time getting the skimmer to work and in order to work on it, the overflow has to get stopped and then because of the canopy it becomes a real pain trying to get it to restart and then pulling the hose out. The person I bought it from has had it on the back for years and she liked it but.. she did have hair algae. So, with that said, it probably wasnt working the way that I am going to want it to work. We might just have to throw this on the back of our 18 gallon if it will fit. I keep finding small pak's but nothing that is like this. Its about 22" across and goes most of the way down the back, so about 20 inches down. I wanted to find out what it was rated for as I was thinking maybe this was ment for a little smaller tank but couldnt find info on one that looked like it.

Jill