15_1/4x15_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Lamps Use Big Bloom throughout all

Use Big Bloom throughout all growing cycles to heal root systems and increase nutrient cycling

Application Rates:

Lower the pH of soil less media

preventing efficient photosynthesis

and switch the unit on

15_1/4x15_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Lamps Use Big Bloom throughout allNordic 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