INLINE TDS METER, MARINE AQUARIUM, RO WATER, REEF, MONITOR, CORAL, 6mm PUSH FIT

Green Light – Excellent water quality:TDS up to 50 ppm. Blue Light – Acceptable water quality:TDS 50 – 300 ppm. Red Light – Poor water quality:TDS over 300 ppm. Ideal For: RO systems, reef tanks, marine aquariums, drinking water, and coral monitoring.

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