Photo 1 of 6 in 1 Smart Water Quality Tester, WiFi pH Meter pH, EC, TDS, Salt, SG, and Temperature with 24Hrs Wi-Fi Online Mobile APP Monitoring for Fish Ponds, Aquariums, Hydroponics, Pool & Seawater

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Photo 1 of 6 in 1 Smart Water Quality Tester, WiFi pH Meter pH, EC, TDS, Salt, SG, and Temperature with 24Hrs Wi-Fi Online Mobile APP Monitoring for Fish Ponds, Aquariums, Hydroponics, Pool & Seawater