12x20x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack featured Roots Organics HP2 is minimally

Roots Organics HP2 is minimally processed to preserve all of the benefits and amazing synergistic qualities found in guano and biogenic phosphate rock

Dosatron Water Powered Nutrient Doser - D14MZ3000 - 14gpm - 1

OMRI Listed broad spectrum algaecide and fungicide

Each sleeve is individually packaged and sterilized to a 10⁻⁶ sterility assurance level (SAL) preventing workplace contamination and cross-contamination

burn-free application

12x20x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack featured Roots Organics HP2 is minimallyNordic Pure Half Inch Ring Panel AC Furnace Air Filters consist of an internal frame bonded between flat layers of two different types of electrostatically charged HVAC furnace filter media. The first layer is a high capacity, polyester filter material which acts as a pre filter, capturing large airborne particles. The second, more efficient, layer is a MERV rated smooth poly blend filter material. The electrostatic charge works as a magnet to draw in