Active Air Pre-Filter, 8"x39" Pre-Filter:Active Air Pre-Filter, 6"x24" At the heart of our

At the heart of our line is the essential NPK that provides a foundation for our multi-product Grotek Green Line

increasing grow room humidity

Fruit trees

This Spinosad-Based Product Takes No Prisoners

Active Air Pre-Filter, 8"x39" Pre-Filter:Active Air Pre-Filter, 6"x24" At the heart of ourMake the most out of your Active Air filter with a corresponding Active Air pre filter. Find the matching size from our large collection! Why choose Active Air filters? All filters are maintenance free and feature long lasting activated virgin charcoal that keeps your air odor free. Inside each filter, the charcoal is carefully packed to ensure consistent and even air flow throughout the carbon bed for full use of the filter. Stock up on pre filters