That's right, this unit is ONLY compatible with the pink Quick Connect carbon dioxide cylinders such as SodaStream CQC CO2 cylinder, and not with old screw-in cylinders.
Hello, unfortunately not. The necks of the plastic water bottles from the Terra model are not compatible with this Crystal machine model.
Reason: Crystal and Terra use different bottle neck shapes and locking systems. The Terra plastic bottles do not fit mechanically into the closed bottle system of the Crystal machines.
No, you cannot use this sparkling water maker with plastic bottles - it is designed exclusively for the glass bottle (0.7 litre) supplied. Plastic bottles are not compatible as they have a different thread and fitting to the glass bottle of the appliance.
The SodaStream Quick Connect CO2 cylinder with quick release fits this sparkling water maker. The classic screw-in cylinder is not compatible as this sparkling water maker uses the Quick Connect system, where the cylinder is simply clicked into place. It is not necessary to screw in the cylinder. You can exchange your old screw-in cylinder for the new Quick Connect CO2 cylinder in a store or online.
The different systems are often not compatible with each other. So you can only use the matching glass bottles for the Crystal, because the bottles can be placed in the matching insert (clearly visible, silver-coloured, on the product picture) and then the upper part of the device (attachment) pressed down onto the bottle to fit perfectly. I don't know whether there are suitable plastic Crystal bottles. I haven't done any research on this either. The filling quantity is actually one of the differences between the devices. The cylinders can be bought and exchanged in various shops. When you buy a brand new cylinder, you pay a deposit of around 10 francs, which you then no longer have to pay when you exchange it (empty bottle for a full bottle). The easiest way to compare the various SodaStream devices is to do a Google image search with the search term "sodastream device overview".
Unfortunately, we do not have our own empirical values on this. Therefore, the question was forwarded to our community so that someone who has tested it can answer it.