How to keep CO2 in an air conditioned grow room?

That might not have made much sense to anyone, but thanks for helping me come to a realization either way.

freshed05 said:

TCL TDW40E20 Dehumidifier for Large Bedrooms and Living Rooms, 3,500 Sq. Ft, White

200$ on Amazon

works great

Click to expand...

That thing is tiny bro, sorry to say.
It is only a 20 pint (removes up to 20 pints per day) and probably won't keep up in a sealed room.
I had one 30 pint, as soon as I hit flower, humidity went out the roof. I bought a second 30 pint, still touching 70% at peak hours....
Bought a 70 pint, replace a 30 pint. So now I have one 70 pint (5000 sqft) dehumidifier, and one 30 pint (2,500 sq ft) dehumidifier and finally keeping the RH below 50%.

Chek it out, https://www.amazon.com/dp/B07RTJWFQX/ref=cm_sw_r_cp_apa_fabc_P85Q2VZ94WT2K0PEVXFD?_encoding=UTF8&psc=1
$250 and removes 3.5x more water per day than what you got