Will I need to actively cool a 400w HPS/MH?

The Grim Reefer

Active Member
Hi, I was planning on getting a 400w HPS to do a personal grow in a room about 6 x 12, however the area used for the actual grow will obviously be smaller. Anyway, seeing as how I'll have a portable AC unit to cool the room/dehumidy, and fans here and there to keep air moving, will I need to get ducting/inline fans to cool the light?

Reason I'm asking is because HTG supply has pretty good deals (as well as other sites) on non-air coolable grow lights, basically ones without flanged hoods. They are cheaper than air-cooled reflector/ballast systems and I'm just starting out, so I don't want to have to spend a whole bunch of money on a super advanced grow room. The AC unit is something I've had for a year so it's not like I bought it because of my interest in growing.

I also would rather NOT deal with running ducting and having to make muffler boxes for the ducting, purchasing inline fans, ducting, making a special window box for the duct to go into...etc, etc.

Any thoughts?
 

Dirtyboy

Well-Known Member
A 400 does not kick out a whole lot of heat. You will find out how hot it will get when ya set it up. Ya may want to look into the 600 watter.
 

cloudflyer

Well-Known Member
Hi, I was planning on getting a 400w HPS to do a personal grow in a room about 6 x 12, however the area used for the actual grow will obviously be smaller. Anyway, seeing as how I'll have a portable AC unit to cool the room/dehumidy, and fans here and there to keep air moving, will I need to get ducting/inline fans to cool the light?

Reason I'm asking is because HTG supply has pretty good deals (as well as other sites) on non-air coolable grow lights, basically ones without flanged hoods. They are cheaper than air-cooled reflector/ballast systems and I'm just starting out, so I don't want to have to spend a whole bunch of money on a super advanced grow room. The AC unit is something I've had for a year so it's not like I bought it because of my interest in growing.

I also would rather NOT deal with running ducting and having to make muffler boxes for the ducting, purchasing inline fans, ducting, making a special window box for the duct to go into...etc, etc.

Any thoughts?
Cheeper how? They cost in quality, not to mention how much overtime your AC is going to cost. Get the vented reflector and a duct fan, (carbon filter too :)
 
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