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I guess that is going to depend upon the room size and if you could open that window? Unless you need stealth tactics, I would just use a fan blowing on the plants and adjust the window????
Hey Furry- I have a 600w HPS MH in a tent in my office which is about 20x24. I also have plenty of air through the hood and out the window through the setup on GWE site. Also forced air conditioning so temp is well controlled and I'm running a dehumidifier about 50% of the time. I keep the house at 73... I still have to keep an eye on it or it'll get to 85 or more with the HPS. The MH isn't as hot it seems. I'd pass on the umbrella IMO.... Peace!
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