Powerhead Headach.

[mansiz]

Hi all, I place in two power head with one sp800 and one sp1200, I use it to blow my LR, but it really gives me a great headach, if I blow from the left, the right side rock started to have white mole, if I place the other way, the other side happen also. My question is, how do you ensure that the current produce by the powerhead is able to swept through all the parts of the rocks?

 

[Bearfan]

I set up my powerheads in a "X" pattern to create the most turbulence.