In the past month my rock has been turning brown and now it's green . I don't know what I'm doing wrong I haven't over feed my fishes I only have 5 in a 40gal .it's not hair algae it's just green stuff
parameters are
Alk 9
CA 420
Mag 1320
po4 0.3
No3 5
parameters are
Alk 9
CA 420
Mag 1320
po4 0.3
No3 5


