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6" fan with 4" exhaust fan?

UrbanHillbilly

In Bloom
I'm still considering fan options for my 3x3x6 tent. Right now it has a 4" fan pulling air out. I posted recently about having high temps and realized I had left the heat mats under the pots plugged in (DOH!) so things are much better now, but I'd still like to bring it down a few more degrees. For reference, I was seeing temps, with the mats plugged in, of 86-88F, and now they're in the very low 80s, like 80-82F, at least below 80F.

I'm wondering if I could swap around some fans I have on hand. Would there be any problems with using a 6" fan to push air in, a small 4" exhaust fan (which is currently in use on the little 2x2x4 tent), along with a few of the other vents open a bit? I would then move the regular 4" fan to the smaller tent. This would move the 3x3 tent from a bit of negative pressure to positive pressure. I don't know whether or not that would be a problem. The humidity level right now in that 3x3 is in the 40%-something range.

On another note, my bumbling continues. Yesterday I was checking on the plant hanging to dry in the little tent. I have a tray of water in the tent to get a bit more humidity. Last night the water was low so I pulled it out to add some at the sink that's within arm's reach. Sure enough, I accidently tipped the top bud (hanging the lowest with the plant upside down) in the water, while it's a week into drying. Ugh. Hopefully that will dry out within a few more days along with the rest of the plant for trimming.
 
I'd keep an eye on the overall plants' response but if you set the 6" in on low, and the 4" out on high, that should minimize the positive pressure which, in and of itself, isn't that big of a deal but generally speaking negative pressure in a tent is better than positive.

That wet bud tip could become a problem IMO if your plant was within halfway dry, you might want to cut that piece out and dry it somewhere else, just my 2 cents on that
 
Years ago there was a Water Cure tech floating around, since the goodies we grow the plant for, are not effected by water. Well unless they stay wet.
I pull air from the top of my grow areas, and in my tent, on a dedicated 18/6 timer, I allow my lower vents to be open.
 

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