This is the interior of my old electric water heater/boiler.
Is it over?
>>1013008
Looks like mineral deposits, fill it back up with water, dump some vinegar or citric acid in there, repeat several times and watch it peel off and dissolve literally
>>1013018
But this shit should look something like this when in a better state
>>1013056
that ain't rust, if it is rust it would be more uniform, it should be deposits
>>1013008
If its leaking its over.
If the anode is rekt get a new one in there.
>>1013124
There is not even an anode in there (there should be)
That looks like rust pits.