Sup guys I have green cyano all over rocks and sand what can I do to fix this.... I blow off rocks weekly and do a 10 gallon water change and clean the sand. Tank is a water box 130 reef..po4 is at 0.02 no3 10....I been doseing po4 to keep them from hiting zero but this seems to make the problem worse..tank is 2 months old...here's a few pictures..tanks