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Super high output lamp technology
Calibration and conductivity standard solutions
Can be used in all growing media
Mix 1 ml/L (4 ml/gallon) of water for every watering through the flowering cycle
17x29x1 Exact MERV 13 AC Furnace Filters 6 Pack flowering Photos shown may not beNordic 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
