CO2 help.

Hi. Best controlled way to get your co2 up is going to buy co2 gas. Chip way - flexions, sex or any activity in the room where you have grow box All methods 100% working but only one has full control of it. Enjoy

It's higher at night because the plants isn't using any co2 then. Err don't put cats in there, nasty things....gas tank with regulator is the best way to introduce co2 but there's more to it than that.. I would make sure all other practices are at 💯 before co2..

Sit in your lung room and breathe, lol... This really will make a difference despite the laugh. Have to test whether exhausing into room while you sit there is a net postive or negative... climate and co2 ppm concerns. Less cat hair... Closed systems: -Burn fossil fuel. Be sure to have a co2 alarm / regulator. -yeast, sugar and water... just realize to make a real impact you'll probably need 40-50lbs of sugar in a fairly small room just for the flower phase and saving a bit of effort in vege. This is less consistent the burning some gas, but if tweaked properly can be nearly as good if done in an intelligent way using co2 ppm tracking etc... maintaining 1200-1300ppm during light cycle being the goal.

Its lower at daytime since the plants use it. You could close the window to get it to around 600ppm (thats the average indoors) CO2 Bags and what not dont really work unless you use like comically much and a closed system. The most viable solution is to use a gas tank and a controller that can time the release to keep it at a desired level. Challenge here is the heat. Not for the plants but they place the tent is placed usually. Having a Lungroom is recommended. Or you have a really cheap supplier of CO2 Gas Tanks/Refill then you can just keep the windows open.

Close your windows and buy some cats and let the cats live in grow room also you can keep your window closed and have your grow in the same room you sleep in. Co2 is 400-450ppm outdoors in the USA. A closed bedroom with someone sleeping in it can easily exceed 1500ppm from just one night of sleeping in the room