20x25x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 6 Pack Nutrients and Supplements The controller uses 0-10V adjustable

The controller uses 0-10V adjustable DC voltage to control ballast output power and switch on/off the ballast

Ability to for recipes with up to 6 nutrients

This growing medium is designed to meet crop requirements for organic growers of herbs and vegetables

humidity and CO2 ppm levels

Fully waterproof with auto off function

20x25x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 6 Pack Nutrients and Supplements The controller uses 0-10V adjustableNordic 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