Cooling Requirement Calculator
Purchase this replacement sensor for your Oakton Low/High/EC High tester and keep your instrument running in the most efficient shape possible
The black base prevents light penetration to the root zone and reduces the chance of root disease
Successful calibration indicator
Be cautious when using Elite 91 CalMag on young or weak plants as the nitrates (along with other nitrates from your base nutrient) can cause tip burn and stress
10x20x1 Pleated MERV 14 Air Filters 3 Pack tubing Cooling Requirement CalculatorNordic Pure MERV 14 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, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.