It will heat up plenty, but you will want to run a small space heater in there during 'night' to avoid dewfall and a temp difference of more than 15 degrees.
I flower in the same sized space but run a K plus a 400 HPS in there. You really want a 1000 for that room, especially vegging under a 600 MH. I'd veg under a 400 with the plants all close together and then spread them out to fill the room and flower under a 1000. You want up to 3x the watts in flower that you had been using in veg to be most efficient.
stinkyattic Reviewed by stinkyattic on . What ta expect.. Well hello , i just recently set up a room thats 5' x 6' nd it seems to be perf for what i want to accomplish , i can fit 20 /2 Gallon pots in there nicely , and i 20/3 galllon pots later nicely to , but i was wondering if one 600w MH convertion bulb would be good for 20 plants in a 5 by 6 area , then ima switch to the 600w HPS bulb , ... u think it will be good enouph for the 20 so odd plants? , or would i be needing a 1000wer of both?? lemme know , thanks Skyler:cool: Rating: 5