Since I put on my orbit 2x96w, I was told I would grow some life in my aquarium... But what i see are breown stuff that are multiplying like crazy, they're all over the place, I think I have enough clean up crew but I'm not sure if having this brown stuff all over my rocks and this morning on the back wall of my tank is good? I read about diatoms and haven't read anything good about them, then again, every fishstore i've been to has brown algae in their tanks... is this a problem? or is this good for my algae eaters (coz now they have stuff to pick on)... Is there any good algae I'm supposed to have in my tank?