18x18x1 Pleated MERV 13 Air Filters 12 Pack Growing Media Press and hold the button

Press and hold the button for a few seconds and Primo automatically enters calibration mode

Mini-Sachets/Sachets on Sticks: Apply one sachet per propagation tray or plant

There is no limit to the number of times that BotaniGard 22WP can be applied in a season

Temperature control range: 40 - 95°F

Chemboys Humic Liquid is a concentrated form of organic liquid carbon derived from the purest Leonardite

18x18x1 Pleated MERV 13 Air Filters 12 Pack Growing Media Press and hold the buttonNordic 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