How many cfms do i need to cool a 600watt hps

[knightmare3d]

so i currently have 15 600 watt hps bulbs with air cooled hoods what rule of thumb should i go by cooling them. also i r un co2 so no open hoods. thanks.

 

[anon0988]

I would think (and this is purely a thought exercise as I've never had that size of a grow) that it depends on how it's set up? What is the layout like for hood placement? What size air duct do your hoods take? Are you trying to do them all in 1 continuous run, or could you split it into groups that vent separately from each other?

 

[knightmare3d]

well im gonna have 7 on one chain and 5 on the other and 4 on the other

 

[knightmare3d]

opps i ment 6 instead of 7

 

[anon0988]

What size ducting do your hoods take, 6" or 8"?

 

[knightmare3d]

8