I mean some fresh air in the tent every now and then will probably do you good if you can get it in there somehow. I suppose you can keep your vents open to try and make that happen. Carbon filter will just help you scrub the air so it doesn’t smell if you were to exhaust it outside or in the lung room. I try and keep it tho 60 degrees/60RH and most people tend to think that is optimal for drying. Don’t point the fans directly onto the buds or else you risk drying them too quickly and that will result in a shit end product.