No CO2 i gave up on it when my burners broke. Vegging til about 1 ft high. Im in hydro 4x8 canadian table and 6x6 pots of hydroton. Ionic Nutes with bushmaster and boost. White Rhino. I havent been able to break the 0.5g/w barrier. Maybe CO2 would help? Maybe going to soil?

i have much less experience but i would say 3 600s would be better just because you would prob have more lumens ft^2 and if you air cool they would be much cooler than 2 1000s....just my 2 cents

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http://www.rollitup.org/grow-journal...door-grow.html cfl-outdoor grow journal

You can get and increase of 5-20% with co2---you will get closer to 20% if all your other growing factors are at 100%(temp.plant health/nutes/light/humm---ect...) You can gain another 5-20% from using sucanat(use till the very end---I use a tablespoon with every gallon of water or nutes used(every-time starting at the end of week These should help push your gains up-----make sure you are really pushing the phos on your plants---they can take a lot you just have to build them up to it.----can you raise and lower your lights? are you lollipopping your plants? hope the info helps...

If I could get away 1000's I would---I love how dense they make the buds---but when you add up all the watts----fans /lights/-a/c-/air pumps/humidifier's/lights for veg/lights for clone/lights for mothers-the list goes on and on----i"m maxxed-out close to 5,000 watts with all the shit.---don't want to push my luck like some of the crazy grows on here.

Yeah I am lollipopping (just started this) and adjusting lights, tho not everyday, I only get to my spot every 3-4 days. PH usually raises to around 7 by the time im back. I should prob change water more often. I havent heard of sucanat. Will look into it and get CO2 rolling again.

sucanat is a dehydrated organic molasses in powder form, it is easy to use and breaks down in water fast.

Air cool those 1000's you already have and put them on a rotating light mover.

sucanat is good but if you cant find it, just get some Advance Nutrients carbo load, I know a guy who worked at advance, he would weigh up purrified sugars that sell for like $5 a 40lb sack with strait water and sell it for about $40 a liter as advance nutrients carbo load.