I have 2 actinic 2 10k 48" t5ho about 3 months old. I agree with you about the water parameters but I have had it tested by 2 lfs
and the same. It will drift some between testing nitrates climbed to around 5ppm and phosphates around 0.24ppm. I am assuming cyano
reddish brown hair like algae looks more slime like on substrate than on rocks. Was told it was cyano
by someone after describing it.
I have 2 O. Clowns, a Coral Beauties, a handful of hermit a some snails, plus 2 Emerald Crabs. I am currently waiting on a shipment of snails and macro algae