Help! Was going to flip my girl to flower tonight, and we’ve got our DIY 2x3 panda film tent all wrapped up and lightproof. Have a Vivosun 4" fan & filter combo pushing air out the window. Have three 4" ducts in the shape of “upside-down U’s” providing passive fresh air intake.
Problem is, even with all that venting, the panda film is still pulling toward the center of the tent, and I’ve only got the fan on to pull about half strength. Is this kind of vacuum a problem, especially at our girl’s sensitive stage of her development?