JetEngineMech,
Is the skimmer doing its job? Are you getting a cup or more of dark greenish slime every week? If not, replace it.
I have no thoughts on the bio wheel. My adult daughter has them in her freshwater tank, but I don't know anyone who uses them in salt water. Like any filter, clean it regularly and keep the crud and detritus out of your water circulation.
Do light cycles make a difference? When it happened to me, the change in light was drastic -- from 15w to 96W, so that probably contributed to a cyano bloom.
However, IMHO, light quality is more to blame for hair algae blooms than for cyano blooms.
Root cause of all of this: Overfeeding? Probably. _________ -- SAW39 45 gal modified hex. Started and cycled August 2005.
2 Serpent Stars, Ocelaris Clown, Yellow Tang, Green Chromis damsel, Condalactis & Macrodactyla dorensis anemones, 1 big bristleworm, 1 small Banded Coral shrimp.
 | 
