Algea ID

[hadams356]

Could someone I D this algea for me, been battling for over year. Seems to grow only on back and 1 side of tank. It's a reddish brown, turf type, covers coraline and kills it, cleanup crew/ fish won't touch it. Been trying to combat it with different types of bacteria but with little success. Doesn't seem to bother corals just ugly.I know pics aren't the best but any suggestions appreciated.

 

[Idoc]

It just kind of looks like GHA actually. Continue to scrape it off and capture as much as you can in filter to remove. When I had GHA all over the back of my tank, I would scrape it and then swish around a filter sock collecting as much as possible from the water column. This worked the best for me.

 

[hadams356]

Thanks

 

[zcapogna]

Team, looking for positive ID and treatment of attached.

Don't have a complicated system. Just fish and cleanup crew. Fluval 405 filter. Reading of nitrogen 0 except nitrate between 10 and 20ppm.

Substrate is white aragonite.

Only 2 species in picture.

Brown stuff coats tank and easily brushes off.

Trying to determine if Diatom (silica) based or Algae (nitrate) based.

Using Fluval Marine light. Water temp 79/80F. Water Change 10% a week. 75 gallon tank.

Looking for best advice to address.

Considering waiting out and adding more snails.

Thx!
Zac