Anyone made a mini version of a swap cooler for a grow room?

My humidity is usually below 40%, so its a thought. with good ducting, and planning I think it might work.
Might even be able to do double duty on a fan or two. Worse case scenario, and indirect swamp cooler always works.

you know this will heavily increase your humidity right?

Possibly. I never felt icky/sticky in Tuscon and Yakima. And an indirect system will increase humidity *zero* percent (though a lot more complicated. I have a lot of crawlspace room. Enough to make a grow room, but a bear to get under the house)

I *might* be able to control the humidity.

BTW whats happy humidity levels? and whats the kill zone levels (ok not kill, but fungi I'm not growing 'shrooms)

the humiditys fine how it is,,as long as it doesnt get too low,,,you want less than 50% when flowering,remember a oscilating fan blowing on ya plants 24/7 helps prevent mould too,but between 30-40 is fine when vegging,,ideal humidity should be alot higher when vegging but alot of growers grow in low humidity with no problems.peace

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in veg it can be from 50-60....

flower....keep it as low as you can!!!! i wouldnt want any humidity higher than 50-55 in flower

Hey i was worried about the humidity in my flowering room also. I just added a small humidifier in my room and it raised the humidity level from 22% to 48%. Do i really need the humidifier or not?