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Inlet/Outlet Valve: 1 1/2"
In almost all cases
Use 3/8" air hose length up to 300 ft long
and the white ground brighter
backyard pond or large aquarium system it is essential to remove both ammonia and accumulated debris
HANNA Checker pH Tester Inlet/Outlet Valve: 1 1/2"Hanna's pH Checker supplies users with fast and accurate readings from 0 to 14 pH with a resolution of 0. 01 pH. This compact tester features an easy to read LCD and simple to perform two point calibration. The pH electrode of the Checker can be easily replaced. You only need to unscrew the electrode from the meter body and screw on a new one. The Checker is fast, accurate, lightweight, and with 3000 hours of battery life, you won't have to worry
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