I have three red eared sliders. I use Turtle Clean to help break down organic waste.. it seems to help my filter out in keeping things under control. The problem is, my tank is huge and I go through these bottles of Turtle Clean super fast. Does anyone know of a cheaper alternative? I've read that there is something people can use for ponds that does the same thing.. it must be cheaper cuz ponds are massive.. are those options turtle safe? I also read about some thing for septic tanks that alligator owners use..

