22x24_1/4x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Grow Light Ballasts continue to add Rootbastic during

continue to add Rootbastic during the first three weeks of plant growth

Enhances taste and smell profiles of terpenes

use Purpinator in the vegetative stage at 2-5 ml/gallon

but they both contain the same bacillus in the same amount

22x24_1/4x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Grow Light Ballasts continue to add Rootbastic duringNordic 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