Hit mash temperature spot on, everything was going well and my spinny sparging thing stopped spinning and sparging.
I've no idea what's wrong with it - I've poked the holes through with a pin, if I blow through it the air comes out at the arms spin round. It just won't let water through. No time for panic. What do I do now?

So suddenly I'm a batch sparger, thanks to eskimobob's online calculator. Hopefully the extra 30 minutes mashing time won't do it any harm, and I've got just about 30L of wort into the boiler eventually. If this turns out ok, I may be a convert.

cheers