Lil' Alert Mates - Ruby Barb 1 Year Monitor LM
Let Ruby tell you when to change your water. Continuous ammonia detection
Product Features
- 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
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