flurocarbon question

Question
i have 20 lb bs line and want to know how long my flurocarbon leader needs to be and what strength for 20 lb mainline.also what knots to use tying main to fluro and also fluro to hook thanks

Answer
Lucky for the both of us I was checking out Flourocarbon line not even 5 minutes ago. I came across an interesting site that may benefit you.

http://www.bassresource.com/fishing/fluorocarbon_line.html

Copy and paste to read all about flourocarbon line, knots, and so on. Hope that helps you out.