I have a 4" infinity inline fan and carbon filter, both are rated at 210 cfm. Lately I have been having humidity issues.
During lights on I set temps at 80 degrees and night time 65 degrees. Here is my problem…day time my fan doesnt run much to keep temps below 80 as my grow room is in a cold cellar so humidity climbs in the mid 60’s.
Night time as the temps drop obviously my humidity goes up. So I added a dehumidifier which takes care of the humidity but then I cant get my room temps below 75 degrees because of the heat from the dehumidifier.
I just ordered a cheap 100cfm 4" inline fan but I’m not sure if I should put that on the intake or add it inline to the exhaust line.