WNY wrote:Why not Just put a hot water coil in your coal stove and circulate thru your hot water tank.
What? that's trying to make the stove into a boiler! Unheard of.
Whatever the coating was on the inside was crumbled up in a heap at the bottom of the tank.
You sure it wasn't lime scale that fell off of the elements?
Why "strip it down"? Leave the insulation and the outer skin on it, it's there for a reason. Leave the elements in as well, use the TPR and drain ports, just use thread tee fittings.
If the "Bucket A Day" ever fails you can always make a diving helmet out of it...