Seachem pH Alert is a unique color device designed to be placed in the freshwater 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. Seachem pH Alert lasts up to 4 times as long and is half the size of competing products. It’s small, clear, and unobtrusive, so it won’t detract from the view of your aquarium. For freshwater use only.

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