I cannot seem to beat this algea outbreak, tank is 6-7 years old and I'm recent months I've had this algea outbreak. It's a biocube 14 with a black box over it for lights now. I've done big water changes and am running a phosban reactor now as well. I have 2 clowns, red dragonet and 1 watchman plus a bunch of coral. The algea will take over the glass in 2 days time easy. Before posting this I took the tank and dumped in a little hydrogen peroxide and turned it lights out. What is going on with this tank? Thanks

