Toulon Good looking out on phosphoric acid warning. I imagine you were in quite a bit of pain?
The stones that were lodged in my kidney caused zero pain. I only found out they were there because i showed some blood in my urine on an annual checkup. Once the soundwave machine (lithotripsy) blasted them into tiny stones, the fun began. 6 weeks of passing gravel, blood and tissue as it all worked it's way out. Pain was not high as the bits were small, but I don't want to do it again.