Scott,
In order to help control and rid algae you must first find out what's causing it to bloom. There can be many factors to cause this action. You stated in a previous thread that you were using Langley tap water, if that's still the case and it's not treated by means of RO/DI then this could be a major cause of the problem. Also, performing more water changes to rid the tank of excessive nutrients could be doing more harm than good if your simply using dechlorinated tap water. If your water is not the problem, then check other things such as overfeeding, old bulbs or tubes, low alkilinity, dirty filters, etc.... Alot of the time an algae outbreak can come from something that is right in front of you and it's simply overlooked or just not thought of.
Also make sure that after you scrub your rocks free of algae, too give them a serious saltwater rinse before you place them back into your tank, otherwise you might be releasing more spores back into the water.
Goodluck
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