On February 27th I filled the fresh water tank just before leaving Southwest Florida to go to Coach Buck City. <br/><br/>About three weeks later when we got home I filled the tank again, adding the proper amount of Clorox to disinfect.<br/><br/>Now we're on the road headed to New England and when using the water we notice a sulphur-like <br/>(rotten egg) smell and grayish discoloration. <br/><br/>We...