It is difficult to open the ports to install new anode rods, and the difficulty increases as the water heater ages due to corrosion.Corro-Protec has 2 models, one for dedicated anode ports (AO Smith) and one for inline in the hot water line (Bradford White):https://www.amazon.com/s?

But I admire your tenacity and ‘go-gettiveness’I would encourage you to find your local real estate meet-us and start circulating there if you haven’t done ao yet.  

Been running a self serve car wash for 3 years landlord just informed mes me that my lease is up and is increasing $2k,currently paying $2200.Is that something worth staying!

Look at your AOS and see what it says.

I've proved my case so many times I've lost track.... but some people just have to be "right" to feel good about themselves, and I've already made that concession.The flaw in @John Nachtigall 's  argument is he ***-u-me-s that this is for everyone.

I suppose here is a good time to ask you all, the “more expert than me-s” in the thread: on a scale of “5% return standard deviation bond market” to “15% return standard deviation stock market”, where would you put the unleveraged, post expense rental income of a well managed (aye, there’s the rub) SFH portfolio?

Florida specific, and aome other areas----Perhaps an over looked dinstinction:  I, as an agent (or a non agent) can pay a referral fee for a Lead, but it can Not be dependent upon whether a sales transaction occurs.  

I had an AO smith with long warranty,   It died at near year 10.  

@Douglas VogelListsource is the best place in my opinion to get AO lists.

View reportJust got an AOS on the attached property.