there are going to be several factors that play into the "end game" , can i push full power on the lights,, it will fully depend on how tall the plants get, I dont think there is any way in hell the plants can take 60 watts per square at only 12 inches over tops,,, and i doublt i will be able to keep 21 inches, I can raise the light maybe 3 more inches before it has to move left a bunch to go up next to the exhaust fan, but that makes the light off center?,, so what will happen, its a crap shoot, i have done 2 grows with 250 watts of cob , my old panel pulled 250 and had no dimmers, the second citi panel pulled 250 at full power, and both those grows went well, If thats the case then I am at 270 now, and they look fine ( ill go check them in a mintue),, will i have bigger colas with more watts?,, will it fry leaves?,, will i even be able to dial it up to full power?,, or will the whole thing blow up in a blaze of glory?