i'm currently vegging 6 plants in 36''H x 22''L x 11.75''W cabinet under 4800 lumens of 6400K CFLs, probably gonna double that soon. my question is for flowering. im either gonna get another fixture and use at least 9600 lumens (140watts) of 2700K CFLs, or get a 150watt HPS light and fixture (16,000 lumens). the hps won't cost me that much more, so i really want to know how much hotter a 150watt hps would be opposed to 140 watts or possibly more of CFLs. also, the hps system has the ballast separate from the light fixture, to cut down on heat in the grow area (ballast accounts for 15% of heat is what it says). i can leave the front of the cabinet wide open to ventilate, since stealth isnt a big issue. do i absolutely need a fan running for hps or cfl (12/12 light cycle)? so is hps worth the extra heat? and how much hotter would it be compared to near equivalent wattage of CFLs? Thanks all.
rage3426 Reviewed by rage3426 on . Cab grow, HPS vs CFL questions (heat) i'm currently vegging 6 plants in 36''H x 22''L x 11.75''W cabinet under 4800 lumens of 6400K CFLs, probably gonna double that soon. my question is for flowering. im either gonna get another fixture and use at least 9600 lumens (140watts) of 2700K CFLs, or get a 150watt HPS light and fixture (16,000 lumens). the hps won't cost me that much more, so i really want to know how much hotter a 150watt hps would be opposed to 140 watts or possibly more of CFLs. also, the hps system has the ballast Rating: 5