i am having a problem with high humidity in my small grow box with 3 plants. the box is 1'x2'x2.5'tall. i am in my second day of flowering and have never had a problem until now. before i was running the lights 24/7 and im now 12/12 and the humidity is only high while the lights are off the temp is around 80 with lights on and 60 with lights off humitity stays below 50% while lights are on and goes up to over 80% with lights off. i have an intake and exaust fan running 24/7 and can not add more fans. also there is not enough space for a dehumidifier. i have heard of using rock salt but i have no money i mean $0. will regular iodized table salt do anything and is there anything else i can try? any answers will greatly be appreciated thank you. Your fellow stoner.
How are you measuring humidity inside the grow cab? One low-tech solution is to buy some Damp-Rid, it's a dessicant (soaks up moisture) in pellet form, will wick moisture out of the air. You can get it at Wally World, Home Depot, etc. i've used it before and rigged up so that my intake air has to pass through the Damp-Rid before entering the box.
I think i will try that thank you. it will be monday before i can afford anything and im only in my second day of flowering do you think this will cause any problems if only while the lights are off and only for a week or so. they are doing soo good i don't want to stress them in any way. i am also hoping atleast one is male because they are filling up the box quick. i have been tying them down the past week or so but i think they are still going to get too big. thank you