22x30x1 MERV 7 AC Furnace Filters 6 Pack MH Apply 2 ml/L (8 ml/gallon)

Apply 2 ml/L (8 ml/gallon) during the last 2 weeks of the vegetative cycle to prime the plant for blooming

This high-performance HVAC replacement filter will outperform non-electrostatic fiber-glass filters

Manual Mode (Dashboard)

Maintaining a stable and safe level of pH between 5

Plants that are native to acidic regions may be iron deficient if grown in soils with higher pH levels

22x30x1 MERV 7 AC Furnace Filters 6 Pack MH Apply 2 ml/L (8 ml/gallon)Nordic Pure MERV 7 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters