There is this brown stuff growing on my Lether coral that looks like algae? I did not think that algae could grow on since they had protection against it can anyone Identify or help me with this?
Ph: 8
Nitrate:30ppm
Kh:8
Calcium: 430
Phosphate: 0ppm
Ph: 8
Nitrate:30ppm
Kh:8
Calcium: 430
Phosphate: 0ppm