10x33x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack ph-ec-tds-meters-and-solutions – Standard Dosage Rate: 1

– Standard Dosage Rate: 1 ML to 2 ML per gallon

Adjust PPM higher in later stages of the bloom cycle to desired strength

allowing you to optimize light intensity for each stage of growth or gradually ramp up during sunrise/sunset periods to reduce plant stress

It's that easy

With the Reflector Heat Shield

10x33x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack ph-ec-tds-meters-and-solutions – Standard Dosage Rate: 1Nordic Pure Custom MERV 14 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