CO2 and exhaust help. Autos 3 weeks and photo week 1

What’s up guys. Finally put the autos in the 12/12 room that’s half ass set up. Along with a photo. Plan was to veg photos and with some autos. Photos go into 12/12 autos stay but definitely no room for 3.

I added a CO2 bag but I have humidity andtemp issues.. lights on fan on full everything is okay vpd is a little higher than I’d like but I can live around 1.2

lights on fan off (level 3) to keep some negative pressure.Rh goes up vpd goes down.

lights off fan off rh shoots up high 70% vpd .45. Temp 68°
Lights off fan on. Lower 60s. Vpd will creep up closer to .7ish temp drops 64/65°

so basically If I run the fan all day co2 is useless right? Sucked righ out? I got a meter off Amazon that I don’t this is work. Says it’s the same ppm In the closet next to the bag And outside.
I read ti cycle the fan on and off. I’m doing 15 on and 25 mins off (level 3 and level 10)

any advice?

Without a sealed room, the CO2 won't do anything, it's just being sucked out, and for CO2 to be really effective you need higher temps and more intense light.

Just use a constant air exchange, if its possible.

Phytoplankton said:

Without a sealed room, the CO's won't do anything, it's just being sucked out, and for CO2 to be really effective you need higher temps and more intense light.

Click to expand...

It’s sealed pretty well I checked with the lights running and fan on full the ppm meter is reading right over 600. Right now there’s 350w in there….

Roguedawg said:

Just use a constant air exchange, if its possible.

Click to expand...

What’s that mean lol as in keep it on one speed 24/7? Like find a sweet spot? I have the ac control if I keep it on temp/humidity it kinda works. The humidity spikes and will keep it on full blast. So I’d have to lower that to only go on let’s say lvl 7