Fallow Tank Algae

[chandavi]

So on day 6 of 80 day no fish in DT due to ich. Ghost feeding a tiny bit of pellets fir shrimp/snails still in.
Getting green and (I think) cyano algae’s. Tank is 2.5 months old.
sal 1.026
pH 8-8.1
Amm <.25
Nitrite 0
Nitrate 0
Phosphate .25
78F
Thinking of removing rock with cyano and scrub and treat with h2o2
Other algae in gravel not sure?
Just vacuum with water changes?
Will the green algae eventually run its course?

 

[Spare time]

Up your nitrate and consider dosing some coral food like aminos. If you think its cyano just get some chemiclean (and up nitrates)