Seachem - Water Alerts

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l change color reversibly to alert you of any potentially harmful fluctuations in the pH level ranging between 5.8 and 8.6. Simply match the colors to the corresponding color wheel for results and readings. When first used, the device may take up to 30 minutes to produce results, but from thereafter results should be produced in approximately 10 minutes. The device itself is small, clear, and unobtrusive so it won't detract from the visual attractiveness of your stunning aquatic ecosystem. It can be cleaned with soft material, and for best results should be read under natural daylight. Show more