Originally Posted by
thang45
http:///forum/post/2785510
I'm planning to keep soft and hard corals. 4 pump for 46gal? Then maybe I should get 4 pumps for mine as well.
Do you think two #4 and two #3 too much for 90gal? If no, where I can put the pumps to archive the best water movement?
Personally I don't think two #4 and two #3 is too much in a 90. If you have corals sensitive to flow you will need to be careful where you place them.
I actually have 6 powerheads in my 46. Two #3 about 6" below the surface blowing at each other from opposite sides of the tank and near the front of the tank. Two #2 are blowing on the back wall at a 30 degree angle and the flow bounces off and collide with each other. Then I have a Seio 810 in the back of the tank blowing toward the front. This causes lots of turbulence with the #3s. Last is a MJ 1200 flowing across the back of the live rock at the bottom. Mine is extreme and not everyone (including me) needs that much flow. It is funny to watch the fish and shrimp try to catch the food if I don't turn the pumps off to feed.