Originally Posted by ScottBrownstein
You can use bleach, but then it smells like bleach. I use a box of baking soda mixed with water. Put it in the system, pump it through and let it sit for an hour. Then flush...and you are all set. The hot water heater if left standing will develop the smell that you are experiencing.
Bleach kills bacteria and Algea, Baking soda does NOT!
Although baking soda is often used a household cleaner, it is ineffective against most bacteria, including salmonella, E. coli. and staphylococcus. If you suspect there has been a contamination of any of these bacteria, ditch the baking soda in favor of a product registered as a disinfectant by the EPA