JBL ProFlora pH Control TouchSmall controller by JBL to monitor and moderate the pH and CO2 levels in your planted aquarium. This small sized computing device can be attached to the wall or inside the cabinet and connected to your CO2 system for easy access to adjust. Please note that pH sensor and solenoid valve are not included and sold separately, to purchase a complete system please check the m503 set in our JBL ProFlora System kit page. The acidity defines the pH value of
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