Seachem Alert Combo Aquarium pH & Ammonia Detector, One Size
pH Alert is a unqiue color device to be placed in the aquarium or filter and monior pH continuously. A sensor changes color reviersibly to alert you to shifts in pH levels between 5.8 and 8.2 Freshwater only.
Features: No strips, no tests, just constant readings; Seachem Sensor Technology
Includes: Alert Combo
Intended For: Aquariums