Thanks for the response...the only one so far, I guess you have to be here awhile to get more response....Have you checked your c02 levels ?, I think the normal is around 2200ppm for optimum growth. I have seen incredible results in both veg. and bloom stages, and i'm not even close to having the ultimate grow yet. Thanks for the advise on oxygen disruption when mixing with c02, I thought it sounded a little risky, but I figured i'd throw the idea out there anyway. Thanks again.....:jointsmile: