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yeah go with the humidity dome, and to test if they can handle it without the dome, give them half an hour, if they start to wilt then put the dome back on. some links to help.. http://forum.grasscity.com/absolute-beginners/24559-some-dos-some-donts.html /...

haha i ment what brand light, and is it a digital ballast?

well done overall. ease up on yourself, mine looks real bad.. got cfls so yeah haha. wot size light man?

yeah i agree with MistaKris, outlet needs to be double the inlet cfm, with a good carbon filter which does slow down the cfm a bit, so work that into your maths. hope that helps

thatll fill that in no time at all. roughly 23000 lumens if it was close and a perfect world lol :mrgreen:

hey dudes. thinking of making a octagan grow room. 600w hps, and a 250w hps for veg, with ozone in the inlet, a really complicated carbon filter, possibly ebb and flow. thoughts?

to get your power bill amount, dont know where u are but this is an example for Kw of power per hour lol 0.16 x 18 = $2.88 per day. just an example. duno if that helps but good luck

yeah i agree with everyone lol cfls suck.. but arent bad for starting clones... just succesfully cloned from a plant 4 and a half weeks into flower, quite proud of myself. haha but cant afford a hps, so im stuck with putting them outside during the day... (yes i stay up till day light) lol but...

i recommed gettng an old heater... and using that above them with a mixture of diff cfls. cheap and effective.

i reccomed getting a CO2 generator for veg, put it on the inlet fan, itll work wonders. but u should wait till you get ur plants a little bigger then put them on 12/12 cheers