| Did you cure the live rock before adding it to your tank?
It may have had a lot of die off that fueled your current algae bloom.
I would remove the rock clean it out in some nice clean SW scrub off the algae swish it around to get all the detrius and stuff outta the rock. Get as much of the loose crud off and outta the rock as possible. Then put back in your tank.
You may want to consider running something like Rowaphos to help control excessive phosphates and silicates as well. |