I have a lot of Purple Alqae on the Glass in small circles in my Reef Tank and some small spots of dark brown/red alqae, Is this bad?
Tank 29 gallons Reef Tank with a Hippo Tang 3 inches, Clarkii Clown 4 inches, Pigmy Angel 2 inches and a Percula Clown 2 inches, one Cleaner Shrimp, 3 Emarld...