Ya I always just give a quick rinse to all my reels, including my spheros. Make sure your not using to much pressure. That can push salt deeper into the reel. Just a very light rinse.
Do not submerge your reel in water..The best thing you can do is whipe your reel down with a rag soaked with wd-40, dont spray your reel with 40 because it will remove greese...Just whipe down the reel and put it away it will be fine.