I began using the silver pulser 14 days ago, and experienced the same. The thirst was terrible, like the body couldn't take up the water i drank. I thought it was the effect of quitting my last addiction, coffee. Then after a week it suddenly was ok again. But when reading this i began thinking more around it, and i remember i used the H2O2 (Hydrogen-Peroxid) shower method and when i do it the body also become dry. Or I should rather say dry-like because it just feels that way, it isn't really dried it just feels that way. Something is gone, and the body makes signals similar to dryness. So i guess the thirst comes from drinking ozone water. I drank a lot of it and still do.
However I am very happy with SP, the ozonator and the silver.
I haven't felt so good in ten years. I want that Magnetic pulser too.