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so two diffusers operate at one flowrate
Drop-In unique probe chamber allows water flow-through and can be placed into a skimmer or pump vault
Measures 24"W x 5
Certified watertight gasket withstands water spray
Calibration Solution for Eco pH+ Tester Pen by Trans Instruments (Solution ONLY) Nycon so two diffusers operate atThis is the Calibration Solution for an Eco Series pH+ Tester Pen. Use this link to find the pH pen that matches this Calibration Solution.
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