JBL ProFlora CO2 Control - the latest measurement and control technology measures the pH value and temperature and regulates the pH value and supply of CO2 relialby and fully automatically. This ensures luxuriant plant grwoth and healthy fish. The JBL ProFlora CO2 Control has a coloured touch display for easy operation as well as a whole range of useful features never before incorporated in equipment of this class. A simple multi-lingual menu guides you safely through all the functions. The complete equipment runs on low voltage (12 V), providing the highest possible safety.JBL ProFlora CO2 Control+ automatically regulates pH value and supply of CO2 with coloured touch display and temperature measurement+ Measurement through separately available pH electrode (replacement about once a year)+ direct user interface for pH value/temperature sensors+ set pH value and actual pH value identification, automatic calculation + supply of the required CO2 amount+ alarm function to warn of any out