20x26x1 MERV 7 AC Furnace Filters 6 Pack grow-system/-trays/-reservoirs Use the Hydrologic reverse osmosis

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

Does it require electricity or a pump

Use to connect the Bluelab Pro Controller™ to external switches

Wicking mats can be re-used or replaced as needed

20x26x1 MERV 7 AC Furnace Filters 6 Pack grow-system/-trays/-reservoirs Use the Hydrologic reverse osmosisNordic Pure MERV 7 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters