24 1/2x27x1 Trane ReplacementMERV 13 AC Furnace Filters 6 Pack PH/EC/TDS Meters and Solutions Seaweed is a naturally organic

Seaweed is a naturally organic way to boost growth and achieve robust healthy plants

It develops into the adult stage in about one third the time required by other mite predators

For indoor/outdoor plants

0 pH to 14

Controls powder mildew

24 1/2x27x1 Trane ReplacementMERV 13 AC Furnace Filters 6 Pack PH/EC/TDS Meters and Solutions Seaweed is a naturally organicNordic 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