Seachem Alert Combo

The includes both PH sensors and ammonia alert sensors. Both give constant readings to ensure you know the PH and ammonia levels of your aquarium continuously.

Features & Benefits

- The colour matching wheel makes it easy to read levels of both PH and Ammonia in your tank
- PH Sensor lasts 3 - 6 months
- Ammonia Sensor lasts up to a year
- Suction cups to stick to the glass of your aquarium