We live in Germany and having young children decided to do what I would never have dreamt of before, we have just bought a Knaus Sport and spent 2 weeks in Cornwall. I am now a convert and want to improve the water supply to our caravan. We only have a 15 lit cannister with a pump which sits in the gas bottle compartment(?). I have bought a 40 lit Aquaroll and wonder how I can connect this to the existing caravan system. There is no external connection/flap on my Knaus. Can anybody suggest something?