CEG4048,

Thanks again now I understand things more clearly. I am grateful for all of the help you given thus far. Now I understand why things went sour last time. The light was not the problem my NH4 must have been high because my filtration was not good enough for my fishload. Adding ferts only fueled the fire. It didn't start the fire. I think I got it now, and I now get a better sense for what to look out for going foward.

Cheers,