For salt water, you want to make sure you’re using a reel that is machined aluminum from bar stock. Cast Aluminum reels are a bit porous and will get pitted and corrode from the salt.
After fishing, you’ll need to rinse and then soak your reel in fresh tap water for about 30min (I usually leave mine for a few hours or over night). It’s a good idea to give it another rinse afterwards too. Also, make sure you clean your rod as well as the salt can do a number on the epoxy coating if left untouched. Not to mention you’ll have an ugly white film of salt left on the rod.
For my salt water rod, I have an Albright XX 8wt. So far so good, I’ve just got to get used to casting the sink tip line.