I checked out the coopers website today and they recommend for the stout to top up to 20l, wait till the first flush of joyous yeast banqueting is over then top up to 23l....
Has anyone done this and found success?
Yours in Beer
ringsingding

Great idea.... I've only tried squre tubs.... not thought of trying those round flexible ones.johnston wrote: As for the overflow I got one of them big flexi tubs from tesco. Which also has the advantage of being able to fill it with cold water and ice blocks when the temperature went up .