Be very, very careful and make small changes over an extended period of
time. That's all I have to offer. I had the same bright idea.......
Now, I think if I can get rid of all the BGA and get things growing
again... I'll just be content with the hour a week spent in trimming.

If I ever have the guts to try that again.... I think I will try to
decrease the levels in proportion (lighting, nutrients, co2)

http://www.geocities.com/spiral_72/Spirals_page.html