Is this Diatoms?

[banditpowdercoat]

Sorry pic was too big had to resize
Ya it blows off mostly with a power head. Looks stringy like kinda tho

[Ron99]

If it's stringy probably dinoflagellates. Same strategy to clean it up. Water changes and nutrient control.

[SteveCGY]

I'm not an expert maybe someone else can chime in but to me looks like GHA covered in diatoms. Only as that's what my tank looked like at the beginning. Once my diatoms left I was left with GHA.

[Cal_stir]

I don't think hair algae will blow off, +1 on dinos.

[banditpowdercoat]

I do have a GHA issue too, but mostly at the upper levels of the tank, like overflow rim

[Cal_stir]

Ya, looks like I can see some in the lower part of the pic, are you using anything for phosphates?

[banditpowdercoat]

Only using Biopellets

[Cal_stir]

Pellets not real good at po4, might need some GFO.