Is plumbing antifreeze harmful to HW tank?

Dave H M wrote:
I would open the drain and stick one of those flush tubes that fit on the end of a garden hose in there.

Bob, this would be a good idea, as many of the pink anti-freeze solutions will cause a lot of foaming, if in your water heater, when you start using your shower next season.

I've BTDT, it won't hurt you, but may make you wonder how clean you are, after the shower.:) It seemed my by pass shutoff leaked a little, on previous FW, allowing a small amount of pink to get in WH.

Jerry