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Great to have on hand for field crews or for use where ear plugs need to be replaced often
It eliminates algae by covering the top of the media
increases vigor
New density + new hydrophilic technology = better water distribution and root development
21_1/4x23_1/4x1 Exact MERV 7 AC Furnace Filters 6 Pack hydro-systems Great to have on handNordic 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
