EX CO2 virgin needs As to dilemma

A big thanx to all that helped on last thread,this is my dilemma : I'm growing in a shed in atent in mid winter in uk!so now I've the ideas forco2 and started pills last nite I light at night as to ward of nite time temps it works lovely but the woolen blankets ń Mylar allovertokeep th heatin for the day wend they sleep. 3c to 6c daytime I have reptile heat pads under each pot they keep the bio bizz light at 19c to 21c I exchange 15m an hour that don't effect the"soil"temp but I worry foliage temps must plummet My Q is do my girls need air exchange when they are sleeping cos learnt were snoozing they cannot do nothing co2 wise so why chill my gals if no other reason to exchangePLEEEEEAAAASE HHHEEEEEEELLLLLLPPPPP PEACE

Dude, its the English language, they have punctuation.

I'm sorry about thr punctuation but I come from an OLD Gypsy family n us boys worked we had NO schooling! Sorry it upset you

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I'm growing in an insulated garage in Canada.. Temps outside get to -40f/-40c inside the garage it sits around 10c. I exchange the air from the main garage into the grow space and maybe open the main garage door once or twice a week. Temps go from 12c at night to 25c when lights are on. I run my lights durning the night (due to the extreme temps). Everything seems to be going good to for me. Check my log if you'd I like to see.

There some serious temps so am I doing wrong by giving a 15 min exchange every hour as co2 does nothing when gals are asleep (I to light at night)so for them 12 h threw the day should I not exchange cos all it does is chill my foliage all roots are between 19c 21c as I have reptile heat pads at the bottom of each square 10l pots so the Q: exchange or not? Keep it green Smudge

Ide still exchange, but less frequently. Just make sure you have a oscillating fan moving the air around, the plants take co2 in the day and exhale oxygen in the night, both need to be moved from the leaves.