Id forget about adding mg. Jacks has more than enough. Id probably start at 1.5ec n see if they green up.
Nice rooms buddy. Im getting ready to go to cmh. Ive been debating on the dual bulbs vs the singles n more fixtures. My friend pulled 1.6 gpw off an all 630 dual cmh room. Ive seen the proof. There the best light going imo, unless your going large and want the raw power of 1k de's.
cool, i'll skip the mag then. i think that was just a notion from my LED formula lol. have you seen the DE 945 CMH? gonna throw one in my revolution micro and let her rip in flower!
they also have DE 630 cmh as well now. lots coming out for us lately. as soon as revolution releases their air cooled version DE(doesnt cool the bulb, just the fixture and convection heat it creates) im going to switch over with their new bulbs as well.
they are also releasing an LED that is supposed to contend with DE 1k's in the 8-900 range.