When I first setup my 300G I had poor circulation and ended up with a cyano bloom that was real nasty ( covered everything ) ... my theory behind what happened was too small a skimmer ( at that time ) and not enough circulation to keep the currents moving detritus/nutrients etc out of the tank and into the sump so that the skimmer could remove any excess stuff ... this time around I have a Beckett skimmer that would suck the remaining hair right off your head Bob
and about 8200 gph circulation inside the tank ... only algae problem I had was a little bit of diatoms when it first started up and thats it ( " knock on wood " ... it has been back up again since Feb/03 ) ... now Bodhi has stated that circulation is not a problem so nutrient export is the next culprit in line IMO ( besides Evan may have used the sand from his old reef and stirring up all the nutrients that were in it could easily explain his mini-cyano bloom ) and after that it would be lighting spectrum ( but by the sounds of it the lights are new ... 1 month old )
Fixing the problem of nuissance algae is often a combination of factors I think that have to be eliminated one at a time ... my suggestion as far as circulation was simply from personal experience it was a contributing factor at that time.
Cheers