How to maintain grow room temp but filter odor?

mainemedical

New Member
Hello all,

I live in Maine and my basement is very cold. As of right now in my 4x2x5 tent I have 500w HPS (a 1000 dimmed 50%) running. This 500w runs with little to no ventilation (fan run on thermostat controller), as to maintain the temperature in the grow room between 70 and 80.

However the problem arises with the carbon filter. How do I effectively filter out odors if my fan is almost never on? If I run the fan full blast the grow room temp can easily dip down below 60. What I am wondering is how can I effectively control the odor without sucking all of that warm air out of my grow tent and replacing it with frigid winter basement air. Thanks !!!!
 

borbor

Well-Known Member
If you plug a fan directly into a filter and just leave that in the middle of your grow room it constantly circulates/filters air without sending it anywhere
 

whitebb2727

Well-Known Member
Hook the filter to the fan and run it in the tent on low. Just recirculate the air. Its a scrubber.

It sucks air through the filter and out with never leaving the tent.

Or scrub the air outside the tent.
 

Carolina Dream'n

Well-Known Member
Buy a Y for your ducting and a damper with a temperature probe on it. When the temps are too low the damper opens and the air is only recirculated, when heat is present the damper will close and the air will be exhausted out.
 

mainemedical

New Member
If you plug a fan directly into a filter and just leave that in the middle of your grow room it constantly circulates/filters air without sending it anywhere
Hook the filter to the fan and run it in the tent on low. Just recirculate the air. Its a scrubber.

It sucks air through the filter and out with never leaving the tent.

Or scrub the air outside the tent.
This sounds like a good idea. My only worry would be, in the event of a warm day, the tent becoming too warm and not having any way to exhaust the warm air.
 

mainemedical

New Member
Buy a Y for your ducting and a damper with a temperature probe on it. When the temps are too low the damper opens and the air is only recirculated, when heat is present the damper will close and the air will be exhausted out.
This also sounds like a good idea but also sounds a little expensive compared to other options thank you anyway !
 

whitebb2727

Well-Known Member
This sounds like a good idea. My only worry would be, in the event of a warm day, the tent becoming too warm and not having any way to exhaust the warm air.

Mount it higher up in the tent. Buy a flex hose and just hook it from the fan to the vent. Just leave the vent closed until needed.
 

Carolina Dream'n

Well-Known Member
This also sounds like a good idea but also sounds a little expensive compared to other options thank you anyway !
A Y is 25 bucks. A damper is less than a 100. It really is the solution to your problem. Room gets too cold, carbon filter just scrubs no exhaust. Temps get to high it goes back to an exhaust.
Good luck.
 

markymark88

Well-Known Member
Get a $20 heater at Walmart and put it in there. Make sure it has a thermostat.
And watch the electric bill go through the roof.
I went through the same thing my basement may be a little warmer. In the 50s I ended up putting my fan on a timer 15 minutes on 15 minutes off. helped but didn't solve the problem. My situation differs from the fact that I built a secret room in basement all light proof. Then I put a tent in it. I veg outside of flower tent and keep veg lights on when flower are off so I could pull warmer air into flower tent. When lights are off. The secret room is air tight and I have the only intake ducted right to my light so when it builds negative pressure ftom fan blowing air out I'd have a passive intake ducted right to veg light. It's worked great for me
 

deadgro

Well-Known Member
And watch the electric bill go through the roof.
I went through the same thing my basement may be a little warmer. In the 50s I ended up putting my fan on a timer 15 minutes on 15 minutes off. helped but didn't solve the problem. My situation differs from the fact that I built a secret room in basement all light proof. Then I put a tent in it. I veg outside of flower tent and keep veg lights on when flower are off so I could pull warmer air into flower tent. When lights are off. The secret room is air tight and I have the only intake ducted right to my light so when it builds negative pressure ftom fan blowing air out I'd have a passive intake ducted right to veg light. It's worked great for me
If you're worried about an extra $30-40/month, you have bigger problems than just heat.
 

markymark88

Well-Known Member
If you're worried about an extra $30-40/month, you have bigger problems than just heat.
Closer to 70 or 80 a month after I added a 400 watt hps on 18 hours a day my bill went down on average 60$ a month. Those heaters pull 1500 watts easily and they have to run way more than u think especially with 4" fan cycling that whole rooms air every few minutes
 
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Smokenpassout

Well-Known Member
Do bot scrub without exhausting heat out and fresh air in constantly. Recirculating air within an area didnt work for me. Odor only got stronger. Why dont you turn up that hps and turn keep fan speed on half power, to pull heat out slowly?
 
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dbkick

Well-Known Member
If you plug a fan directly into a filter and just leave that in the middle of your grow room it constantly circulates/filters air without sending it anywhere
This usually requires a fan twice the cfm as a fan that would be exhausting the air from the room.
 
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