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Heavy Metal Reduction: Reduces mercury
The strong
and the washable
Nutrilife H2O2 (29%) makes it easy to increase oxygen levels around the root zone
HM Digital Waterproof EC/TDS/Temperature Meter flowering nutrients Heavy Metal Reduction: Reduces mercuryHM Digital COM100 Water Quality Testing Meter. Waterproof. Measure EC TDS. Temperature Tester. IP 67 rating. Factory Calibrated. Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more. The COM 100 is a professional level EC TDS meter at an unbeatable price.
US$ 20.00
US$ 25.00
US$ 25.00
