How to get rid of this?

[DTz]

Was away for a week n came back to this. Corals are thriving but unfortunately the algae is too.

No3 15-20
Po4 0.03

Was advised by lfs to dose microbacter 7 every other day with skimmer off for 5 hours after each dose. Any other good ideas?

 

[BigKid4788]

BRS has some videos on R2R that may help. They give various treatment options. Not goi g to happen quickly