My question is should I add another powerhead? I have 2 Koralia 1350 powerheads on opposite sides opposite corner in a 75 gallon aquarium. One on the right back corner blowing along the back and one on the left front corner blowing along the front. Seems to be some accumulation of deitrus under the rocks. Thinking I may need one on the back wall blowing down or at least frontwards? Yes/no? What would you recommend if yes?

