In my part of the world at this time we sayin morning ππΎ
Iβve used Co2 before itβs best to have fresh air coming into your grow room, have the Co2 coming out and hitting the fresh air so it can dispel around the grow room quicker and more efficiently also when using Co2, you can take the temperature up to 33βc although I suggest not going above 29βc,
Because your using autos they grow more during the dark period increase the light hours to 20/4 and reduce to 18/6 late flower to stop the stretch βοΈπΎ