Active Air Pre-Filter for ACCF246, 6" x 24" grain allows you to sort that

allows you to sort that 15 pounds in as little as 7 minutes

this medium gives you optimal absorption and drainage

magnesium and more

Another benefit of the drain grooves is the limited contact surface with the ground

coarse grade perlite

Active Air Pre-Filter for ACCF246, 6" x 24" grain allows you to sort thatDescription Extend the Effective Life of Your Active Air Carbon Filter: This can be achieved with a corresponding Active Air pre filter. These pre filters help in blocking larger particulate matter such as dust and dirt from clogging the working surface of your filter. This results in your carbon filter operating at peak efficiency for a much longer period. After several weeks, when the pre filter becomes visibly dirty and discolored, simply replace