Nov 7, 2023 #1 J jts813 New Member View Badges Joined Oct 25, 2023 Messages 18 Reaction score 4 Location California Rating - 0% 0 0 0 Is this red slime algae? I was hopeful it was coralline but now I’m thinking not. I have a lot of other smaller purple spots on my rock as well. Next to it is a darker blue-green algae?
Is this red slime algae? I was hopeful it was coralline but now I’m thinking not. I have a lot of other smaller purple spots on my rock as well. Next to it is a darker blue-green algae?
Nov 7, 2023 #2 Dan_P 5000 Club Member View Badges Excellence Award R2R Research Joined Sep 21, 2018 Messages 6,739 Reaction score 7,223 Rating - 0% 0 0 0 If light brushing removes it, then the red patch is cyanobacteria.
