Don't replace anode rod
While I agree that most people in TV never perform ANY kind of maintenance on their hot water heater, you are commended on drainage of the tank.
For the short time we've lived in TV, and family that have lived here since 1994, draining a tank and briefly flushing, a minimum of once a year, HWH should last 15 - 20 years, with no other service, other than replacing one or both heating elements on electric models, possibly every 10 years or so. Gas units are pretty much trouble free, other than cleaning.
Personally, while the water isn't real bad in TV (compared to what we had in OH and MD), I try to drain my HWH twice a year, clean the top, move things away
from the tank and do a lite sweeping with a duster to the gas controls and around the base.
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