12x25x1 Pleated MERV 7 Air Filters 12 Pack cloning-&-seed-starting You can use enzymes to

You can use enzymes to flush or add them to the nutrient solution throughout the grow cycle

PVC material

built for large industrial operations

- One side black

Effective on all stages: eggs

12x25x1 Pleated MERV 7 Air Filters 12 Pack cloning-&-seed-starting You can use enzymes toNordic 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