![Amazon.com: Bluelab TRUNV2 Truncheon Nutrient Meter, Digital Conductivity Tester in Water (Scales Include: EC, 500, ppm 700, CF, TDS) Tool for Hydroponic System and Indoor Plant Grow, White : Industrial & Scientific Amazon.com: Bluelab TRUNV2 Truncheon Nutrient Meter, Digital Conductivity Tester in Water (Scales Include: EC, 500, ppm 700, CF, TDS) Tool for Hydroponic System and Indoor Plant Grow, White : Industrial & Scientific](https://m.media-amazon.com/images/I/31VF9zyPq3L._AC_.jpg)
Amazon.com: Bluelab TRUNV2 Truncheon Nutrient Meter, Digital Conductivity Tester in Water (Scales Include: EC, 500, ppm 700, CF, TDS) Tool for Hydroponic System and Indoor Plant Grow, White : Industrial & Scientific
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Difference in EC numbers Bluelabs Truncheon VS Digital TDS meter. grow question by DreamCatcher - GrowDiaries
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