Right, apart from a brief drop to 11 I've kept the FC above 12 for the last six hours. I've taken the light out and scrubbed various bits around the pool (can't unscrew one of the return jets though - any tips?). I've just raised to 15 for the night so we'll see what happens.
I'm home tomorrow but I need to go out the day after - how do you keep going with the SLAM when you have to leave the house?!
Also, I just read this: Bleach should be added to the pool by pouring slowly in front of a return jet with the pump running. You should pour slowly enough that pouring an entire jug takes more than one minute, preferably two minutes. Leave the pump running for at least 30 minutes after adding bleach.
Erm, I've been adding it in front of the return jets but not at all slowly - does this matter??