20x22x1 Pleated MERV 8 Plus Carbon AC Furnace Filters 3 Pack Reflectors & Grow Lights Replace with the traditional lid

Replace with the traditional lid when you are ready to start fruiting

potassium sulfate

with BridgeLux chips

meaning it will damage or kill any plant it contacts—including desirable ones

Made from natural coconut fibers and bound by organic latex

20x22x1 Pleated MERV 8 Plus Carbon AC Furnace Filters 3 Pack Reflectors & Grow Lights Replace with the traditional lidNordic Pure 20x22x1 MERV 8 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer. This results in less flow restriction and 33% more surface area for cleaner smelling air. It will help eliminate unwanted odors as well as trap most airborne dust and particulate matter for fresh, clean air. Odorous gases and vapors (VOC) are attracted to and held by the activated carbon material