Seachem 3 Pack of pH Alert Devices, Continuously Monitors Freshwater for 3 to 6 Months Each Joico Each ball goes through rigorous

Each ball goes through rigorous testing to meet the standards issued by USATT (USA Table Tennis) and ITTF (International Table Tennis Federation)

Part Number: 1092693

Non Invasive

8in/30cm Width is 1

COMPLETELY SILENT NOISE-FREE

Seachem 3 Pack of pH Alert Devices, Continuously Monitors Freshwater for 3 to 6 Months Each Joico Each ball goes through rigorousBrand: Seachem Features: 3 pack of Seachem pH Alert devices No chemicals or test procedures required Continuously monitor pH levels in freshwater aquariums or filters Each device lasts up to 6 months, 4 times as long as competing products A sensor changes color reversibly from yellow to orange to red alerting you to shifts in aquarium pH levels between 5. 4 and 8. 0 model number: 20 Part Number: 20 Details: pH Alert is a unique color device designed