17x22x1 MERV 13 AC Furnace Filters 12 Pack chillers-heaters-and-purification By swapping the traditional lid

By swapping the traditional lid with the colonizer lid after adding grain to the substrate

Gold Label HydroCoco 60/40 is a mix of 60% Gold Label Hydrocorn (clay pebbles) and 40% Coco

californicus should be used in conjunction with other suitable beneficial insects in the presence of large pest populations

Outside Diameter: 31 cm / 12

Also Contains non plant food ingredient: Kelp

17x22x1 MERV 13 AC Furnace Filters 12 Pack chillers-heaters-and-purification By swapping the traditional lidNordic 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