24x36x1 MERV 13 AC Furnace Filters 6 Pack air-purification Top watering also has the

Top watering also has the advantage of preventing fertilizer salt build up

apply once a week from seedling/clones to week 3 or 4 of bloom

so you can spray this product as needed

Pyrethrin or Permethrin

It contains potassium and 2% Soluble Silicon to reduce stress caused by heat

24x36x1 MERV 13 AC Furnace Filters 6 Pack air-purification Top watering also has theNordic 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