Wipe out your humidor with distilled water. For the love of God, don't use bleach on it or anything you'll be putting in it, unless you want all your cigars to taste like pool water. Buy a Boveda calibration kit to set your hygrometer correctly, then buy some Boveda packs (I use the 65%) to keep the humi at the proper Rh. If you season the humidor properly and add the Boveda packs then your sticks will recover eventually, but it will take some time.
There are lots of ways to skin a cat but I think this might be the most simplistic way to get your desired results.