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Can be used in all grow applications (hydroponic
it will lie dormant until grubs begin feeding on roots where the bacteria is present
Built-In Ashcatcher
Made from 100% natural clay
17_1/4x17_1/4x1 Exact MERV 13 AC Furnace Filters 6 Pack Chemicals Can be used in allNordic Pure MERV 13 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, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200
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