Rusty Gribble
Well-Known Member
- Joined
- Oct 11, 2009
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- 412
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I am planning on growing in a grow tent with dimensions 40"x40"x78". My concern was lighting; i was going to get a 400 watt hps system which puts out 50,000 lumens (high end bulbs claim 55,000 but im going to say 50,000) which would put me just short of the 5000 lumens per sq ft that you want for flowering. My question is would stepping up to a 600 watter really be worth it? would i need much better ventilation compared to going with a 400 watter? Also would it be necessary to go with an air cooled hood with a 400 watter or could i just let the normal fans take care of the heat?