Hydrofarm Active Air Pre-Filter for ACCF398, 8" x 39" Cutting Edge Solutions Extend the effective life of

Extend the effective life of your Active Air carbon filter with a corresponding Active Air pre-filter

3 meter temperature sensor for convenient placement

BLOOM is a phosphorus-heavy formula for enhancing flower production

817867010017 (UPC-A) Dimensions 14

Its full spectrum light enhances the color of ornamental flowering indoor plants

Hydrofarm Active Air Pre-Filter for ACCF398, 8" x 39" Cutting Edge Solutions Extend the effective life ofExtend the effective life of your Active Air carbon filter with a corresponding Active Air pre filter. These pre filters block larger particulate matter such as dust and dirt from clogging the working surface of your filter. This keeps your carbon filter operating at top efficiency for much longer. When the pre filter becomes visibly dirty and discolored after several weeks, simply replace it. Check our large collection and find the size that matches