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It's a great resource for customizing your feeding schedule
Higher sensitivity control allows precise flow adjustments
Maximizes your germination success and great for seedlings
When making cuttings
16x21_1/2x1 Exact MERV 13 AC Furnace Filters 6 Pack Grow Strong It's a great resource forNordic 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
