Lil' Alert Mates - Ruby Barb 1 Year Monitor LM

Product Description

Let Ruby tell you when to change your water. Continuous ammonia detection

• Monitors toxic ammonia in freshwater and marine aquariums • Innovative color devices for continuously detecting and monitoring toxic free ammonia; Easy to use, install, and read • A sensor changes reversibly from yellow to green to blue, relative to the ammonia concentration • No test kits, chemicals, or procedures are needed • It lasts over a year and replacement sensors are available