algae

I got the big algae problem don't know how thought it was the lights bought new light. My water is good calcium 475 dkh 9.5 phospate 0 mg 1400 this sucks i tried blacks out for 4 days it comes back. Large water changes it comes back. [/ATTACH] HELP ME

If the new lights are stronger try a shorter time with the lights on. When i went to MH I had a bloom. Took a while of gradual increases to get to the time I wanted them on but it seemed to help control the growth for me. It seems to me anytime I have made a major change to any tank I have had over the years I get a bloom.

How are your nitrates?