what size tank?
are you running CO2? If so, is it distributed through the filter discharge?
I have a 6 ft 125g. Running a FX5. i built a spraybar that is 5 ft long. i run my co2 through an inline reactor.
I have GREAT flow and most inportantly, IMO, i have GREAT EVEN co2 distribution throughout the entire tank because of the spraybar
There are 2 types of people on this forum. Those that have algae, and those that lie and say they don't.