21_1/4x23_1/4x1 Exact MERV 12 AC Furnace Filters 6 Pack led and (3) 120mm spiral fan

and (3) 120mm spiral fan guard

It will also not impact the PPM/EC of your nutrient solution so you can continue to run your other nutrients at full strength

FloraFlex backs this controller with a 3-year warranty

4V) – Smooth

you can also use the SPH-1 8-port hub instead of using the Y-splitters

21_1/4x23_1/4x1 Exact MERV 12 AC Furnace Filters 6 Pack led and (3) 120mm spiral fanNordic Pure MERV 12 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, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different