All the cylinders should fit again... and what about the water bottles from the old Sodastream?

According to the Galaxus scope of delivery, "1x 60L pink Quick Connect carbonation cylinder" is included, but your old cylinder is probably not pink and SodaStream DUO is ONLY compatible with the PINK 60L SodaStream Quick Connect cylinder (matching the Pink Quick Connect). Compare the pictures with your cylinder!

Hello, yes there is a cylinder in the box.

The Duo comes as shown in the picture. A carbonated bottle is also included (is not in the photo). The bottles from older models do not fit.

My device Source is unfortunately defective, the cylinder is almost new.

I think the old cylinders should also fit, but I'm not sure. The new model is much better than the old ones.