Hanna pH Checker 2 red LEDs indicate low

2 red LEDs indicate low food in the container

filter media and fountain nozzle

making it even easier to upgrade to the Nexus Automatic System

600 gallons) of pond water

marine and freshwater aquarium filters

Hanna pH Checker 2 red LEDs indicate lowQuite simply our most popular pH tester, the Checker is a real favourite with its clear LCD display, long thin pH electrode and ease of operation. Key features Sturdy compact meter designed for direct sample testing Easy to read LCD with 0. 01 pH resolution Thin long reach pH electrode included as standard Electrode is quick and easy to replace by unscrewing it from the meter body and adding a new one Two point calibration is simple to perform by