I currently have a mag 18 with about 6 feet of hose which put's my pump at or around 1000-1200 gph
. I have problems in my far back corners I can see theirs not much movement and one of the corners is geting a little algae on it due to lack of cicrulation. Would a mag 24 be enough to change it or could I go a mag 36 and somehow turn it down to where I need it is possible. I can go with an external pump as well if I could turn it down as needed.
I dont think moving the small pieces of rock in the corner will help, it's just that the rock in the center of the tank is killing my current to the ends, the movement is ok behind the main rocks in the center.