I want to add another powerhead (about 124 g/ph) to my 30g. On the tank now is a prizm skimmer in the miidle and powersweep on the right hand side (164g/ph). What I want to do is get the powerhead pointing at the surface so that I can get rid of the oily film on the top of the water. I tested it out with my other PH. And I noticed that there was a lot of shimmering from the MH shinning threw the ripples. Will this be a problem. Its a 30g tank, going to be mainly SPS dominated with some softies and LPS. There is no sump so the overflow can't get rid of the oily film.
Thanx b
Thanx b