8x16x1 MERV 7 AC Furnace Filters 6 Pack pumps-&-irrigation Eliminates algae by keeping the

Eliminates algae by keeping the surface dry

Suitable for use with many different mushroom spores

5" humidity dome is ideal for rooting large cuttings and/or growing cuttings to large size after rooting

and (unlike fish emulsions) no proteins or oils are removed during processing

8x16x1 MERV 7 AC Furnace Filters 6 Pack pumps-&-irrigation Eliminates algae by keeping theNordic 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