23_1/2x23_1/2x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack microbial fertilizer Use with Foliage-Pro® or GROW™

Use with Foliage-Pro® or GROW™ to optimize nitrogen balance and maximize yield

kerosene and acids

1 × Timer

plants in the flowering stage including

5 so that your plants will be capable of efficiently taking in the maximum quantity of nutrients

23_1/2x23_1/2x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack microbial fertilizer Use with Foliage-Pro® or GROW™Nordic Pure Custom MERV 12 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