Don't be as paranoid of light as these people have made it out to seem but now you dont want be growing in a clear container...
Well I should have been, I noticed some weren't looking as good so I open up the res and take a good long look. ALGE!!!...a fair amount of it. At least that's what I'm assuming, slimy stuff covering the roots, air stones, and sidewalls. So res changed just now....I switched over to fox farm also. I hope that doesn't traumitize them. Res is completely light tight now and I will have to be more diligent about res temps....time for daily ice.

Damn well sometimes the hard way is the best way to learn.