15x19x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Hydroponics High humidity will interfere with

High humidity will interfere with the filters ability to adsorb odors

Green Gro Flower Finisher 1-5-7 is intended for use in the final stage of bloom

Procidic is a broad-spectrum foliar spray that eliminates pathogenic fungi and bacteria by using Citric Acid as an active ingredient

many of them toxic to humans as well as other forms of life

15x19x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Hydroponics High humidity will interfere withNordic Pure Custom MERV 13 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition