jstrong
Member
i have read some of the other posts on this subject. i have read that it is because of high phosphates or poor circulation. i have a 125 gal. setup and a 55 gal. i am not getting this problem in my 55 gal. so is it safe to assume that the water quality is not the problem. the 125 only has 2 powerheads at the moment. one is 230gph and the other is 370 gph. what is the proper amount of gph i need for the 125?? and what is the best way to situate them in the tank?? thanks in advance for all your help!!!!!