Originally Posted by Hholly
If you're doing a Fluval, I would go for the 406 instead of the 306. I have one on a 55 gallon and I don't think the 306 would be enough. They're priced pretty low on Amazon.
What he says. I got the 306 but its on a 20 gallon and works great. Totally silent and I only clean it out once a month and it don't even look that dirty, but I replace the ammo chips once a month so if I got it taken apart hell, might as well clean it. One thing I did find out is that you want the hoses to be as short as possible. I wasn't too happy with the flow I was getting when I just cut the hoses in half, but after cutting off about 2+ feet and getting rid of the slack it was 10 times better.