Can be placed in the water pump compartment. Certified for freshwater and saltwater aquariums, hydroponics, and ponds Don’t face the water outlet; Lab Accuracy for All Tanks: Precisely measures pH (±0.1), ORP, salinity (±2%F.S), TDS, EC (±5%F.S), specific gravity (1.000-1.222), and temp (±0.1). Keep the saltwater tank away from the protein skimmer; ph value is too high, you need to shake the probe gently; in other cases, restore the factory settings and then calibrate; Smart 7-in-1 Reef tank, Aquarium, Nano Tank and Pond water monitoring system. Real-time monitoring of pH, Temperature, Salinity, ORP, EC, TDS, and SG via... High ORP oxidizes NO2- to NO3-; Low ORP Elevated nitrite levels ocke Ams, PQx Platinum Seies Shaft-Mount, Full olle, Aluminum, Clea Anodized, 1.5 atio, Chysle, Dodge, Plymouth, Big Block, Kit Pat Numbe: PQX-3544021 Smart Aquarium Monitor Smart WIFI Online Meter PH ORP Temp Aquarium Water Quality Tester Monitor Controller For Swimming Pool Spa Soilless Cultivation Digital Pool Water Tester 7 In 1 Water Quality Monitor Detect ORP PH EC Salinity High Accuracy EC Tester With Lcd Display Backlight For Aquaculture After using it for 1-2 months, remember to rinse the probe with water. The salinity is about 3.2%. Never miss critical changes in your aquarium Universal Aquarium Compatibility: Featuring three versatile installation modes - fixed-mount, suction cup attachment, and free-floating design, this probe effortlessly adapts to any fish tank 24/7 Real-Time Monitoring & Alerts: Monitor pH, salinity, Temp, TDS and 3 parameters via app. Problem with pH Accuracy Check probe integrity; EC solution excluded due to specialized shipping regulations. katoily Aquarium Monitor Merchant Video Precision PH Calibration System: Includes 2 sealed packets each of pH 4.01, 6.86, and 9.18 calibration powders for triple-point calibration (industry-leading accuracy ±0.1 pH). Upgraded Probe: The smaller size, 62% smaller than previous probes, more stable data.