Don't know what 'water conditioner' you speak off but a good draining/flushing should clean up W/H tank.
If by 'electicode' you mean 'anode rod'..they can cause a sulfur smell (magnesium type rod-----aluminum type rods don't react with microbes in water)
If draining/flushing doesn't clean it up then you may need to do a vinegar soak to remove build up in tank..........but that is for tanks that haven't been routinely drained/flushed.
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31