Winter FC

OK, I have just had my first trouble free year with TFP!!! Now winter is approaching, wonder about FC levels:

1. Does it need to change now that it is colder, i.e. no algae growing in the cold, can it be lower?
2. Still jug dump chlorine (no SWG) or add pucks?
3. If pucks, how much is needed in the winter?

Thnaks to all this year, you have been very helpful

Joe