12x20x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack nutrients Can be used in stronger

Can be used in stronger dilutions with zero risk of nutrient lockout

six drain plugs

Velvetbean Caterpillar

Shallow grooves for easy cleaning

12x20x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack nutrients Can be used in strongerNordic Pure 12x20x1 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