so ichecked everything... all reads normal. dosed with purple up and im getting green algae... idk... i never had this problem in any of my saltwater reefs >:[
purple up does next to nothing. ph, alk, and mag are the 3 biggest factors ive found in my tanks. ive gotten up coraline algae quarter size about ever week on my glass when i kept all my levels alil on the high side. seachem products are the best i have found for it.