Dean Cook...

Typically, the stinky water is on the bottom of the tank. Draw your water at about 12" off of the bottom and you might find that your problem is solved.

Thomas

Is there someone who offers an 8" j tube heater, or does it have to be built on site?

More...
I'm wanting to heat a 6000 sq ft shop. If I could maintain it at about 55 degrees I'd be happy. I'm assuming I'm going to need more than one heater/thermal mass unit. And I'm wondering if the 3000 gallon tank is overkill. I build the tanks for a living so I can build one from 100 gallons, up to 3000 gallons. I'm in Virginia, 7a, near the Virginia/ North Carolina border. Thanks for any input.

I bought a Liberator RMH2. I'd like to pipe the exhaust right through the middle of the water tank, which would be positioned within a few feet of the heater. Im talking about a 7' diameter, 10' tall tank, so it would separate from the heater. When I say through the middle I mean side-to-side, but down low. I'm assuming copper pipe will hold up, given it will be submerged. Any thoughts? The outlet of the heater is 6" so I either have to use 6" copper, which would probably cost more than the heater, if it even exists,  or I have to use 3 runs of 4" pipe to equal the flow of 6", or so I believe.  I assume that as the exhaust gas cools, it shrinks in volume, and if that's true, then I can reduce the size of the pipe coming out of the water tank. Is that true?

I took the easy way out, I bought a rocket heater. Now I need thermal storage. I have a 3000 gallon metal water tank. I was thinking to route the flue through the tank. Is anyone doing anything like this? This would be for heating my shop.