How to Flush a Water Heater Tank 

If you have sediment in your water heater, this little device will make flushing and draining simple. You can get the Sediment Buster on Amazon amzn.to/3V7NmRg (affiliate link.)
Flushing your water heater to remove sediment is a task maintenance task you should do annually (according to some random folks on the Internet.) The timing really depends on how dirty your water heater is - and you can find out by draining off a bit of sediment from the bottom valve. But to really get the sediment out, you need to agitate the water inside the tank.
The sediment buster allows you to use a compressor or even a bike pump to push air into your tank from the bottom, mixing up the sediment and allowing it to flow out with the water.
In this video, you'll see how much rust came out of my tank.