Tank is 3 years old. Started having a really bad algae bloom about 5 months ago. Decided, against better judgment, to dose vibrant for a month. Made sure phos/nitrate stayed good. Phos went really high for me. 0.25. Things calmed down a bit but then i suspected cyano so a few weeks ago I ran chemiclean. Numbers all still good but started getting really bad clumping of sandbed algae and algae with bubbles...so here I am.