Arcticfirefighter
Active Member
So I started to get little spots of Coralline algea showing up over the past week. Now all of a sudden I have these deep red spots too. It's not slimy and it's only been around for the past two days or so. All parameters are in check with the exception of Calcium which is steady at 530. I am using IO reef crystals and only have one small Duncan in there to use it up. Nitrates are between 10-20. Really don't think its Cyanobacteria, but I am still really new at this... Thoughts?
