should I add salt to my pool in the winter

Agree with JamesW. Check your manual for your SWCG for the exact numbers but most units won't even attempt to generate chlorine in water colder than 55. If you do want to get some chlorine in there now though, you can always safely add some to the water manually. Bleach is good for that.
 
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.