Quote:
Originally Posted by Jeffdogg
Well soon I was planning on buying a vented shade for my 400w MH/HPS my In and Out vents were going to be connected to the shade. Wouldn't Co2 be benificial in a room where it was hard to maintain a constant 75-80°. My closet likes to stay in the 84-86° range atm. I have a fan blowing over the top of the seedlings and my In vent I made a ghetto scoop, the air (which this time of year is nice and cool) blows towards the light so the temp by the little seedlings isn't too bad.
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Once you seal the room without ac your temps will go up beyond 100+ degrees. You can try to minimize your exhaust and that way you may be able to maintain around 1500ppm constant but you will go through a 20 pound tank once a week. My mate does it this way, he has his exhaust fan on a fan speed controller and can therefore regulate his exhaust cfm. Not efficient though, since in my swealed room one 20 pound tank lasts me about 3-4 weeks maintaining a constant 1500-1800ppm. So, in dollars this means, he spends $80 a month in co2 and I spend $20-$30 a month. You can pay for ac real quick with the savings
Unity