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Our Master controllers do this
Use is water gardens and small ponds
the EL1 is the best choice for you
humidifier
HM EC/TDS Hydrotester COM-80 Reducer Our Master controllers do thisThe com 80 is an economically priced, reliable ec tds meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. Measures electrical conductivity (ec),total dissolved solids (tds). Excellent for nutrient testing. Four scales: ec: s, ms; tds: ppm, ppt. This tester has automatic temperature compensation (atc) and is water resistant. Measurement range: 0
