I was able to drain and reuse the calcium in my tractor tire the last couple weeks, was a process but successful... I think your video was what I watched, fairly simple...
/ DIY How To Add Tractor Tire Ballast Weight with video
Note, it is better to use the tractor valve stems for this, as you can remove the valve core housing and have a larger hole to use for the liquid installation. This makes the job go faster.