12x26_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack pump Use OxiPhos throughout the growing

Use OxiPhos throughout the growing season to both prevent and control plant pathogens

You can stop relying on hand written data logs when you start using the HALO

Compatible with all types of hydroponic systems

AXXE Broad Spectrum Herbicide is a post-emergent

12x26_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack pump Use OxiPhos throughout the growingNordic 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