420 Nug of the Month: 2nd Place Winner
I'm new at indoor growing and have a question regarding Cool Cab carbon filter. Manufaturer says that the filter contains 5 lbs. of carbon. Thats not the problem, once the filter was afixed to the back of the unit the heat changed by atleast 5 degrees higher. This tells me that the exhaust fan isn't strong enough...What do you think???