Seachem Alert Combo Pack
No strips, no tests, just constant readings. Now Ammonia Alert and pH Alert come together!
Ammonia Alert and pH Alert employ Seachem Sensor Technology; a sensor changes color reversibly to alert you to shifts in ammonia levels and shifts in pH respectively.
Simply place them visibly anywhere in the aquarium or filter and read anytime. It's that easy! No chemicals or test procedures are required. pH Alert lasts 3-6 months, and is suitable for freshwater use only.
Ammonia Alert lasts 1 year, and is suitable for freshwater and saltwater applications