used to blow off them. you need for the wastes on the rocks also. they inrease / convert phospate !
maybe you have to increase your circulation for not accumulating.
So should I be blowing them off? My tank has been set up for over a year and everything is doing pretty awesome. Corals etc are looking fine but I was just wondering if that sediment is what is stopping the coraline growth on the rocks. I have alot of corraline on the glass of the tank ans some rocks have it but that is because I bought them that way.