Originally Posted by kenandterry
Atwood heaters do NOT have an anode.
Suburban heaters DO have an anode,whose sole purpose is to be a sacrificial item in the conflict of water impurities.
This buildup is usually the result of the water source you get from the campgrounds you visit. No one can be sure of what runs through your rig. In line water filters can only do so much.
Constant draining and flushing of the water heater is your only defense.
Very true statement. I know on my sail boat I dropped zink on a line as a sacrifice in marinas due to boats using revised polarity next to me I to attached it to my rigging and was surprised how fast they went. But it was cheaper then eating everything under water. Most boaters do not know of the problem it causes them and boats next to them. It is not a myth as some people say....
PS: flush the tank to keep it down more then once a year.