Hey, I found your other post, its in "new posts" right now.

Anyway, first off, go with the 2 x 600w. Two 600s are far better than a 1000w. Not because of the extra 200w but because they are more economical.

I think your set-up is fine regarding your extraction. If you have a speed controlled extractor fan just turn it up a few notches.

I also grow in a tent. I have 190w LED and soon I'll have 260w CFL. All in a 3' x 3' space ! My 4 plants will be blown away !
silent leprechaun Reviewed by silent leprechaun on . moving into a tent I am moving from a closet grow to a 4.5 x 4.5 x6.5 grow tent. I have a 600 watt hps for flowering and that is probably too small so should I get another 600 watt light and air cooled hood which would give me 2 600 watt/12000 total or switch to a 1000 watt light and hood. If I did go with the 1000 watt light would 6" duct,fan and hood be ok or would I have to go to 8". I have 6" duct ,fan and hood now and I want to spend as less as possible but still have adequate light and exhaust. any help Rating: 5