The original topic I had was, will my garage tubs cycle in cold temps, you said yes and I have proved no so far. For me to get the same results as your Lagoon study, I would have to have way under the amount of fish load that would normally cycle in room temps and to max out the entire body of water with bio media. That is just not real world. Bringing in fish from a large pond into tubs will carry higher fish load. And the fish need room to swim.