i would use the Canon Gi-53 inks in the pro 200. You can dilute the light inks with nozzle cleaner from octopus
https://www.octopus-office.de/shop/de/nachfuelltinte/duesenreiniger-reiniger-spueltinte/247/duesenreiniger-druckkopfreiniger-fuer-druckkoepfe?c=875