Air Box 4 Refill Carbon Filter Replacement Replacement RO Filters Add 2-7 mL of Athena

Add 2-7 mL of Athena Bloom B per gallon of water during the flowering phase

Its low to no burn potential and relative odorlessness make it a user-friendly choice

leading to unhealthy plants

It sets up as a full inline exhaust system out of the box

5 Gallons of Air

Air Box 4 Refill Carbon Filter Replacement Replacement RO Filters Add 2-7 mL of AthenaSpecial 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. Refill cartridge for Air Box 4. Single Filter This refill cartridge size is suitable for Airbox 4. (IMPORTANT: Order 1 OR 2 OR 3 cartridges as required for your Air Box unit)