2nd FV or not??

[Bribie]

I do the -1° because I can I have a dedicated fridge that can do that, but most normal fridge temperatures (say 4°) work almost as well - however I totally agree, you don't need a second vessel, unless you are doing traditional European lagering by the book. However if you are in a position to cold condition it speeds things up and you get better use of your keg real estate - it works great with just "normal" ales like the Irish Red as pictured.
Otherwise no dramas.

[critch]

i ferment to 5% of fg then rack (after chilling to 2-4.c to drop some yeast and excess protein)into the casks and they act as the secondry,(no need to prime this way,true cask conditioning!) but as stated in previous posts theres no need to use a secondry fv i.m.e.