Most water problems are invisible to the eye. Quickly measure and modify the five aquarium levels that are most important to the health of your freshwater fish with the API FRESHWATER MASTER TEST KIT. To stay healthy and thrive, fish need properly balanced levels of ammonia, pH, high range pH, nitri...

DROK Car Thermometer Inside & Voltage MonitorParameters: Input voltage: 12V/ 24V Power mode: cigarette lighter power Display color: Red+Blue Functions: 1.Auto battery voltage monitor Firstly, plug the gauge into car cigarette lighter socket and its screen will display voltage of auto battery...