rotten eggs

I know this has been brought up numerous times before, but I thought I'd ask anyway since there are a few things that might be unique to my situation. BTW, in Los Angeles, Calif. Our 30 plus yr old washer finally died. It was a good old Maytag. I knew of a local business with a good reputation...

I was having issues with a rotten egg smell in my hot water and replaced the anode rod. Although the rod had a dark scummy coating on it, it had not been reduced in length or thickness. With the new rod n place, I had almost two weeks of smell free water, but now the rotten egg smell has...