18x27x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack rock-bottom 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

Scale Net Weight: 1678g

Locking casters for easy mobility

the meter shows the remaining battery percentage and when a low battery condition is detected

is not only cost-effective but is also highly effective at providing the maximum possible oxygenation for your nutrient solution

18x27x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack rock-bottom Apply 2 ml/L (8 ml/gallon)Nordic 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