- Location
- Freehold nj
I've just started to notice a dark red algae spotting on rocks I'm not sure what it is but I pray it is not red slime... Here what it looks like
Looks like red coralline to me...if its not blowing away with a baster or if you can't rub it off, almost certain that's not cyano.
Does it grow a lot during the day and then receed in the night? For example when you wake up in the morning is there a significantly less amount of it?