11 1/4x11 1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 12 Pack Dispensary Electrode/Probe HI1271 pH electrode with

Electrode/Probe HI1271 pH electrode with screw type connector (included)

Used to inhibit CO2

Use the Hydrologic reverse osmosis water filter Float Valve 20+ GPM for Big Boy or Delivery Pump to customize your indoor hydroponic garden

Replaceable diaphragms

Balanced magnesium levels

11 1/4x11 1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 12 Pack Dispensary Electrode/Probe HI1271 pH electrode withNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.