Cooling 600 Watt HPS

NoobMaster

NoobMaster

Active Member
...couldn't actually find a definitive answer for my situation.

I have a 600 watt HPS air cooled reflector sealed with tempered glass with 6'' flange. My grow area will be 3X3X6.5 . Total cubic= approx 60.

How powerful of an inline exhaust should I get to keep temperatures down and have the glass seal cool to touch?
 
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shenagen

Well-Known Member
I'm not sure what cfm you should get....I've got a can270 cfm with a can 33 filter and a 600w hps with internal reflector, and my room gets way hot this time of year...I have to leave the doors open, have 2 extra fans, and I taped into the ac outlet with an in-line booster, and my temps are still a bit high for my liking. Point is...600w in a small space gets very very hot...so oversize the ventilation/
 
biz

biz

Well-Known Member
my one 600w in a 2.5 x 3.5 x 8 brings temps of 80-90 :(

+ with the door close 100+; go figure.
 
NoobMaster

NoobMaster

Active Member
oh, wow that tiny. but im sure your growing monster with that amount of light. Whats your temps? high 80's?
 
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shenagen

Well-Known Member
When I get home I can take a few pics of my set-up and show you what has helped....instead of typing everything out.
 
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shenagen

Well-Known Member
its pretty much the same sq/ft as you..my measurements were in feet....not inches...just so you know
 
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shenagen

Well-Known Member
I think I may have the temps under control....81 at the canopy last night after I added the booster fan into the house ac....so I'll know more today when I get back....but I'm having to run the house ac way too much
 
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shenagen

Well-Known Member
Thats why I was saying to oversize it. The temps without extra fans and stuff would get well over 90.
 
NoobMaster

NoobMaster

Active Member
yeah i understand. So do you think an exhaust pulling 424cfm would do the trick? or would that be like a hurricane? lol
 
JohnnyPotSeed1969

JohnnyPotSeed1969

Well-Known Member
if you're going to get a fan that powerful, make sure you get a fan controller as well. most assuredly you will not need the whole 424cfm, but it would be nice to have that extra to play with if you need it.
 
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shenagen

Well-Known Member
I forgot you had a sealed reflector...so yeah one that big may be overkill...but as long as it can exchange the air well then you will be fine(as in having enough air coming in the room to feed the exhaust)
 
speedhabit

speedhabit

Well-Known Member
Home Depot has duct booster fans 6"270cfm and 8' 500cfm for like 26 and 32 dollars. They cool my 1000 watter and exhaust the air in a 9x9 room through a carbon filter. Works great.
 
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chairmanofthebored

Active Member
Can you power down to a 400w? For only a 3x3 space 600w is overkill when you only have 6.5ft ceiling to work with. No wonder you want it cool to the touch. If the ambient air temps are in the 50-60 vs 90s like where I am now, id say give it a shot. I just looked at a n 8" vortex fan and 8" can fan. The can fan was a lot more directional, the vortex seemed like it had more "torque". Both were in the 750cfm range, itll suck the shit out of any hood with a good length of tubing. You still might need AC.
 
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