Water changes and activated carbon

[Lucadagli]

Hi, I'm starting with Basic and Balance. Currently, I use Balling ATI, performing 10% water changes every 15 days and using activated carbon continuously. How should I handle these two activities with the Sangokai protocol? I apologize if the answers might be found in the Sangokai A-Z charts, but I'm Italian and don't understand German. Thanks for your help.