20x26x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack grow-light-reflectors For knock down foliar spray

For knock down foliar spray 2 oz per gallon every 2-3 days until desired results

Intended for use with mushroom cultivation supplies such as Pacific Substrates Goonie Grains

Do you want to enjoy the natural taste of an organic harvest but can't let your system go

Large easy to read display

This broad spectrum algaecide

20x26x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack grow-light-reflectors For knock down foliar sprayNordic Pure Custom MERV 8 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