Thanks LG
When I was growing in tent I just used the passive intake vents and it was fine. This new room is sorta sealed up, so when the exhaust kicks in to vent heat, the intake fan also kicks on at same time to fill the room with fresh air. Also helps with cooling as I run my lights during night time.
Dude, I've been thinking about this (your room setup) for the last day or so. I'm still just confused. I duno if it just works out because of your particular setup/region, etc., or what. Haha.
I'm considering suggesting it to someone but I can't see past the co2 thing. You have a dehumidifier, so that'll take care of humidity whether the room had air exchange or not. You have an exhaust fan that doesn't constantly run, it's set to control the temp only - kicking on the exhaust the room at a set high temperature. That sounds good.
I'm just wondering if the lack of co2 and not constantly exchanging air with fresh air/co2 (or at least a minimum amount of times per day, or something?) is actually made possible solely due to the co2 being produced by you/others in the house breathing, and that being brought in (in what amount?) to the room when the room happens to be exchanging air.
In case anyone else has some insight..
My concern with this setup (in general, not for diggs99, he's cruisin'), if it weren't obvious, is that - for example: A room is setup in this manner, and normally it reaches the high temp point of say 85*F several times a day, causing the fan(s) to come on and exchange the air until the temp drops to the low set point of say 81*F. Well maybe one particular day or season or whatever, the room doesn't quite reach 85*F (especially if the room isn't
fully sealed, and
well insulated), and therefore the exhaust fans that usually activate based on a high temp don't come on at all (or maybe only once that day), so now that room gets no co2 introduced to it.
That's just an example. Without a co2 monitor I'd feel super blind as to what's going on. Low co2 only presents itself as...slow growth right? I'm talking below ambient (350-500ppm). So it might be very hard to diagnose*.
I'm getting very interested in sealed rooms (and semi sealed rooms) lately, haha. Not interested in pumping in 1500ppm of co2, interested in a sealed room with consistent environment, reasonable co2 level - supplementation if required.
Thanks.