11_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Environmental Controllers running 12 hours per day

running 12 hours per day with both VEG and BLOOM switches during the flowering and fruiting stages

and vastly increases nutrient uptake for all plants

The famous fully automated SuperPonics 16-Plant Hydroponic Grow System grows your plants up to 5x faster

When it comes to picking fruits and vegetables

which creates sugars

11_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Environmental Controllers running 12 hours per dayNordic Pure Custom MERV 10 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