Air Box Jr. Pre-Filter Refill pH Up or flowers

or flowers

The choice between this and the 4000cc comes down to one number: how much air is left once the product is in

so add drains if lights-out dryness matters

leading to remarkable yields

drain and inlet line

Air Box Jr. Pre-Filter Refill pH Up or flowersSpecial Order Note: Returns for Air Boxes not used are 14 days from the time of delivery. There is a 30% restocking fee and must pay for return shipping. This is the Air Box manufacturers return policy. Don't let unwanted air pollutens get in your grow room with this versatile Air box jr. From the maker of the original Air box, it eliminates 98% of all insects, molds, mildews, spores, pollen, dust, dander and other airborne particles down to 0. 3