For continuous, precise control of ozone or CO2 injection in your aquarium. Each American Marine Pinpoint Controllers lets you easily set upper and lower ranges to automate equipment on or off cycles to your desired pH or ORP levels. Each aquarium controller has a large LCD display and includes a probe for aquarium use. Replace electrodes approximately every 18 months. Both units have an amp rating of 5, and accept 3-prong plugs. pH Controller includes calibration fluids. 9-volt battery required (sold separately).
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