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It eliminates algae by covering the top of the media
New density + new hydrophilic technology = better water distribution and root development
Upgrade your irrigation system today
This special blend was formulated for organic growers
21_1/4x23_1/4x1 Exact MERV 7 AC Furnace Filters 6 Pack hydro-systems It eliminates algae by coveringNordic 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
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