Thank you so much, I am going to throw some bleach in and leave everything till later tonight or first thing in the morning. I am guessing I will need to increase CYA. I have only just added some to it as all the vaccing I had to do and refilling pool to clear the algae reduced my CYA to a big fat zero!

I will also adjust PH and check everything.

Oh well I can cope with that as long as the pumps are ok.
Thank you again for your help :-)