I decided to "go cheap" and bought 10' of tubing and a connector instead of the "factory extension". 1st pass - fail! Came apart and was able to shut off the water supply before too much damage (hey, the hardwood was dirty from all the snow so it needed a good cleaning! LoL).
Put on another connector and works perfectly. Total cost <$10. But it's a pain wrapping up 30' of hose.
Re temp - I run water through the hose and put water in a small cup, then use my tank thermometer to get it close to tank temp.
And after I siphon off the desired amount of water out of the tank I always go back and run water into the sink to make sure I flush all the tank water that is in the hose, otherwise you're just putting all that back into the tank
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