I already know that my beet pulp expands in volume 8x when allowed to fully soak. I just weighed my "coffee can" of dry beet pulp - almost exactly 2 1/2 pounds (2 lbs, 8.4 oz). So we're just going to say it's 2.5 lbs. I've gotten a pretty good guess for how much water I need to add to let it soak all the way, and it takes about 3-4 hours to fully soak. So, in 3-4 hours, I'm going to drain any extra water off, fill my scoop, and weigh it. Then, with a little math, I should be able to determine how much water and how much beet pulp I'm actually feeding each day.
(I'm not adding my Triple Crown until I actually feed it)