with that light fixutre you are at over 2.5 watts per gallon. I know when I increased the wattage I got algae growth, mainly on the slower growing plants, nothing on glass. Maybe you should use some biospira. I added it to my tank and got a quick drop in both nitrites and nitrates. My levels weren't as high as yours, but it still took abut a week to drop.
What type of fish did you add to the tank? I have a feeling that the bioload from them was too much too soon for the bacteria to handle.

John

__________________