I have had an algae bloom that I cant get under control for 6 months now. I have a 47 gallon bow front with a 10 gallon sump. I have chemipure elite, activated carbon, phosban running through a reactor and a small protein skimmer. I have 2 new kessel blues that run for 8 Hours per day and I have 4 small power heads that alternate flow. I have tried water changes, chemiclean and even a 24 hour black out. I also added a small UV sterilizer that made no difference. The black out worked for a few days but the algae came back. Corals and fish seem to be doing fine but I constantly have to be blowing the algae off them. I feed pellets once maybe twice a week (reduced it to limit adding nutrients). I used to feed reef roids weekly but stopped bc of the algae bloom about 2 months ago. Any advice would be appreciated.