In reply to PPP:
When I did my 100 solos I estimated my water needs and took more and still ran out. My pal turned up at around #80 and it was the first thing I asked if he had, he said yes but had experimented with home-made isotonic and got it wrong... I finished dehydrated but very greatful for the company. I think I was hallucinating at the end... I'd swear I was watching French Climbers trad climb around the Unconquerables area.