12x20x1 Pleated MERV 13 Air Filters 3 Pack grow-light-bulbs the CO2 levels directly outside

the CO2 levels directly outside and inside the stomata can rise threefold which is near the optimum for photosynthesis efficiency

pH-balanced peat plugs offer optimal air-to-water ratio

) and durable and easy to clean

SYSTEM ELECTRICAL

Emerald Rootz blend consists of: Peat

12x20x1 Pleated MERV 13 Air Filters 3 Pack grow-light-bulbs the CO2 levels directly outsideNordic 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