My First Tank...about three months in

[phar]

Well my tank has been set up for about three months now, maybe a little less. So far things have been going along. I have had a green hair algae outbreak. It seems to be gradually subsiding. This week, I had some patches of red hair algae growing on the live sand.
I lowered the photo period of my metal halides from about 12 hours a day to 8 to see if that makes a difference.
I'm thinking I need to get a phosphate remover going as well.
Just made the changes to the lighting so will give it a week and see if that will make a difference.
All fish and the few corals I have seem healthy, happy and eating.