20_1/2x25_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Cleaning Products all essential micro and macronutrients

all essential micro and macronutrients are delivered to the plant at optimal levels

ready for your seeds

The numbers on the Brix scale correspond directly with plant quality

2 to 116 PSI and water flow range is 2

• Fish-Mix 250 ml

20_1/2x25_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Cleaning Products all essential micro and macronutrientsNordic 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