Posted: Wed Apr 08, 2015 7:43 pm Re: Filter is not cleaning my turtle tank
Hi there, logo 897. Unfortunately, just because your filter has a high gallon rating doesn't mean it can handle the bio load of two large turtles in such a small tank. Your biggest enemy isn't the filter--it's lack of tank space. Currently, your RES needs at least a 40 gallon breeder tank, and the musk needs at least a 60 gallon (By the way, what kind of musk is it? I've never heard of a 7-incher, unless it's one of those giant ones from down south). The turtles' sizes, combined with the small tank and "new-ness" of the filter (i.e., being uncycled), are the origin of the poor water quality. You most likely have a combination of rampant bacteria and an abnormally high concentration of urine and feces.
If I were in your position, I would get 2 40B to start, and look into some canister filters. Your current filter won't work, as it is an internal model and won't be as efficient. It's going to be quite expensive--I recommend looking into the Odyssea filter, or building your own out of a bucket. Check out your local Petco for their dollar-per-gallon sale.