ACI Duct Carbon Filters XL Size:4" (300 CFM) The combination of mycorrhizae

The combination of mycorrhizae

Helps take the guesswork out of watering

Displays 3 parameters (pH/EC or TDS/Temp) simultaneously

wherever you are working

ACI Duct Carbon Filters XL Size:4" (300 CFM) The combination of mycorrhizaeAC Infinity Duct Carbon Filters XL are designed to eliminate odors and chemicals, most used in hydroponics builds, grow rooms, kitchens, smoking areas, and other ventilation projects! Features premium grade Australian Virgin charcoal bed made up of activated carbon! Its extra large size enables a greater capacity of the activated carbon to extend its lifespan while maximizing airflow passthrough! Why AC Infinity Duct Carbon Filters XL? Eliminates