I am trying to figure out the best location for my supply (hot) and return (cold) lines to my storage tank. The tank has 4 openings on the top, one at each end and two located about 18" apart near the middle. Nofossil thinks I should run the lines at the middle of the tank, with a tee on the bottom of each line so that the water gets directed out in both directions, horizontally, encouraging stratification. This places the lines as close as possible to one another and I'm a little concerned about heating the return water and at the same time cooling that close to the hot line, since the return will be in close proximity. My thought is to place the supply at the middle of the tank with the tee to direct water in both directions, but to have the return located at the far end of the tank where it won't have such an immediate effect on water in close proximity to the supply. Any thoughts on this will be greatly appreciated, as I have no experience with how this will work. Nofossil has a tank with internal exchange coils, so it is far different than mine. As a result, we're both kind of guessing at what might work.