12_1/2x23_1/2x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Grow Light Bulbs which results in optimum growing

which results in optimum growing conditions for your plants

Hydroponics: Mix 2 – 3 tsp per gallon for recirculating systems or 1 – 2 tsp per gallon for non-recirculating systems

Lighter in weight compared to the traditional T8

is 6” in diameter and 18” in length

Low Rate - 1 tsp/1 gal of water/1

12_1/2x23_1/2x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Grow Light Bulbs which results in optimum growingNordic 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