Identify This Algae

Becca

New Member
Jun 28, 2020
3
0
1
Colorado
I haven't seen this algae before. I have some green dust, and diatoms, and this unknown algae. It is dark green and it requires me to scrub the rocks to get it off. I was thinking maybe BGA but everything I read says it comes off in sheets.

It looks like green dust algae but it is a much darker green.

IMG_20200628_124234.jpg
 

bshenanagins

Junior Poster
Mar 3, 2017
212
113
43
If it takes a good a scrubbing to get it off then it’s probably GSA (Green Spot Algae)