I had it too and in some instances, excess nutrient levels cause these blooms. (High nitrate levels as well as phosphates). Does it grow to a brown mucous slime covering most of the tank contents if left unchecked?? If so, you must physically remove it with a siphon, and do frequent water changes. How old is your tank? Some of this will clear up as your tank matures and you develop more bacteria in your live sand and rock. |