Brown / red algae.

[CSremo]

can anyone identify this?
Showed up last two days. Mostly in one side. This side gets a tiny bit of sun
20 gallon RS max nano.
Tank is 3.5 months old
been doing 4gal water change per week.
Dosing a little kalk
Been using microbacter clean up until about a week ago for about 3 weeks or so.
just got a few new frags a few days ago.
DKH 10.9
Phos .12
Nitrate 4
Temp 74.42
Ph 8.39
Salinity. 1.025

 

[Doctorgori]

I’ve seen that before .... IME there are worse outbreaks/types...If it were me I’d just keep the gravel vac on that .... then again I’m leery of fast fixes as I just smoked a 210G fighting algae and dosing peroxide

 

[CSremo]

Ok. Ya. Planning to do just that. Just wanted to make sure is not something to jump on early.
so far I have been dosing bacteria like microbacter 7 and clean. Seems to have helped lessen some of the ugly stage.
thanks!