20x25x2 Pleated MERV 7 Air Filters 12 Pack PPE is well suited as a

is well suited as a mix-in element with other growth mediums

User controllable tumbler speed

Terpinator is compatible with any nutrient line and can be added without making changes to your current growing regimen

insert tray

Gives your plants a micro-climate zone allowing you to grow crops that are not hardy in your planting zone

20x25x2 Pleated MERV 7 Air Filters 12 Pack PPE is well suited as aNordic 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