Just built my indoor grow room and realized my heater has its big ol' air intake in one wall of my grow room and it can not be moved. I am wondering if there are any filters on the market that are recommended. Thanks
Yeah it's all good. we all still do sheet. You might want to take the vent off and add some ducting (If Possible) and put a filter on it (if possible).
They have that roll up charcoal filter media sheet for air purifiers. maybe put some of that sheet over the duct. and change it bi-weekly?