17x27x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack nutrients can alter and data-log or

can alter and data-log or chart a grow room's environmental conditions

Hydrologic's instant dechlorinator and sediment filter with upgraded KDF85/Catalytic Carbon filter

112 x Micro Drip | 1-Way Micro Tube Dripper Assembly 36" x (Single Unit)

For use with the Hydrologic water filtration systems in indoor garden hydroponics

The reach-through mesh design reduces damage to crops and makes harvesting easier

17x27x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack nutrients can alter and data-log orNordic Pure Custom MERV 12 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