sweeten it with sucralose AFAIK it's not fermentable at least with wines it does not ferment
splenda is sucralose but comes mixed with sugar sometimes make sure you get some that has no sugars. all splenda does have small amounts of other things in it like starches and maybe lactose but this is a 1 to 5% type thing with the no calorie version so it should produce no issues.
beware though the stuff is really sweet.
If it were me, I'd (wait a long time) then bottle it in some plastic 2-liter soda bottles. They can hold more pressure. And, as an added bonus, if you F-up, at least you are dealing with busted plastic and not broken glass.
While the rest of the species is descended from apes, redheads are descended from cats. - Mark Twain