That's a great story. With that size of pool, it takes a lot of chlorine every day assuming it's in full sun. Are you keeping the CYA level higher trying to keep chlorine usage down? I have a 16,000 gallon pool and have a mostly opaque pool cover on it when not in use so I only use somewhat less than 1 ppm FC per day while most full sun pools are at 2-3 ppm FC per day. That's a lot of 5 gallon carboys to haul for your pool. 2 ppm FC per day in 62,000 gallons would be almost 8 gallons per week of 12.5% chlorinating liquid. Perhaps the greater depth has CYA shield the chlorine better so may not be at 2 ppm FC per day. Let us know -- it's a very interesting pool!