Who loosened you guys up?
I've taken delivery of a "shipment" of high-grade psyllium. :toilet_claw:

I feel light as a feather!



Jes' be careful what else (gnat eggs, mold spores, underweight grounghogs, etc.) your intake is pulling into your grow. Filtration may be wise. A closed system may be wiser, if you can manage it.
The possibility of problems of pulling air from below has occurred to me. It??s been bone dry as long as I??ve been here. I did screen with window screen. I had only planned on opening it as little as necessary. How fine a filter would you think?
You'll probably want to upgrade from window screen. The old hippy trick was using sections of panty hose stretched over intake ducts.
(Oldmac usta give us his throwaways. ) Course, the tighter you stretch it, the bigger your mesh gets. (Think Mac was trying to get back into a size 4.)

If I were drawing outside air in, I'd talk to a local A/C company, or the Cooperative Extension Service and see what's in your local air that they'd recommend filtering out. Choose a filter accordingly. They're often rated at micron size.

Mold spores, pollen, etc, are pretty dang small. And finer your filter, the more resistance to airflow (at a given price point). So you need to increase the surface area of the intake to accommodate finer filtration.

A 20 x 24" register, with a household (hepa, maybe?) A/C filter might work for you. I saw some monstrous things at Lowe's, I think, that accommodated a big replaceable filter, and tapered down to connect to a 6" duct. Don't remember what they called it, sorry...:stoned:

Mississippi Steve on this board knows lots about ductsandstuff. Mebbe he can help. I abandoned the idea after calculating how hot and humid the incoming air would be compared to the air I'd be exhausting. I'll keep what I got, thanks...

Jes' be careful what else (gnat eggs, mold spores, underweight grounghogs, etc.) your intake is pulling into your grow.
Stay safe. You really don't wanna pull one of these suckers in... Now he says he wants to hang out on yer porch, too. Brought his own chair. Refuses to produce a vaccination record. Says he's a "fox squirrel." I'm skeptical. :wtf:

[attachment=o219526]