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It is OMRI listed for organic use and University tested
CONTROLLER 69 WIFI
(4 feet) Product Performance and Technical Specs (per fan)
Feed Entry Sizes HPTT: (1/4"
HANNA GroLine Nutrient EC/TDS Truncheon Tester Fan Speed Controllers It is OMRI listed forHANNA Truncheon EC TDS Tester HI98330 Ideal for hydroponics and agriculture applications, the HI98330 GroLine Nutrient Tester accurately measures the electrical conductivity (EC) in mS cm and the total dissolved solids (TDS) conversion in parts per million (ppm) of the nutrients in water. Suitable for plants that need a higher EC, the tester features an extended range up to 6. 0 mS cm (EC), 3000 ppm (500 ppm scale), and 4200 ppm (700 ppm scale). The
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