pH Alert� is a unique color device designed to be placed in the aquarium or filter and monitor pH continuously. A sensor changes color reversibly to alert you shifts to in pH levels between 5.8 and 8.2. No tests, no strips, just constant readings. Freshwater Only.

pH Alert� lasts up to 4 times as long as competing products. pH Alert� is also almost half the size of competing products. It's small, clear, and unobtrusive, so it won't detract from the view of your aquarium.

Simply place pH Alert� visibly anywhere in the aquarium or filter. It�s that easy. No chemicals or test procedures are required. When first put in service, response time will be about 30 minutes. Thereafter, pH shifts will register within ten minutes.