Brown colored algae help

[Skaterbarney]

I have a brown clolored algae growing on the gravel in my tank it's over every bit of the gravel, tried gravel vac it goes for a few days then come back again, not sure what it is I was gonna say cyan bacteria but Im not sure.

 

[Mkloski]

Not cyno. Looks like either not enough circulation or water changes not being done often enough. 15 to 20% water change every week. I've seen that many times before. It's diatoms build up or excessive phosphates. Hope that helps. And ur tank looks good!!!

 

[Tchndie]

It's diatoms. How long has your tank been set up for! You can get diatoms for up to one year or until your tank becomes stable. What type of clean up crew do you have? Also what are you water levels at?