Recently a mysterious ring in the sky appeared over Leamington Spa: https://www.youtube.com/watch?v=WR4ngTFHSPk
After much speculation it seems that the ring is likely to have been due to fireworks tests by Warwick Castle: http://www.bbc.co.uk/news/blogs-magazine-monitor-2 7037579
An example of a similar vortex smoke ring: https://www.youtube.com/watch?v=oFHElJxSMrM#t=1m09 s
(Score: 1) by SpockLogic on Friday April 25 2014, @12:16PM
Spa, Hot Tub, all the same to me.
Clean the scummy ring off with a little non-sudsing cleaner.
Overreacting is one thing, sticking your head up your ass hoping the problem goes away is another - edIII