Powerhead Set up
I have a 75 gallon half circle that has been running for about 9 months. Right now I only have a Rio 2500 for the return, no skimmer (I know I need 1) about 25 lbs. of live rock ( I know I need more) Bio Balls in the wet/dry filter. The overflow is in the middle and I have the return on the right side of it kind of pointed to the left front middle of the tank agitating the surface.
I have a bad case of Cyanobacteria I think, (pictures online look the same) soft dark purple stuff covering my sand bed.
I just ordered 2 Koralia Evolution 1150's and was wanting advice as how to place them in the tank. One on each side aimed at each other?, Aim them to the curved font of the tank?, One high and One low on opposites sides? Both on the same side?, Etc.
Also should I rinse all the Bio Balls in old tank water or do half one week then the other half?, Take the bio balls out completely? Right now it is fish only but will want coral etc when I get a good light.