I have re-started my system with 16 8-10" trout in a 150 gallon stock tank and pea plants in two 50 gallon grow beds. Fish-less cycling in preparation for the trout was very quick compared to the new system startup last spring. I was concerned that the temperature differential between the outdoor pond at the hatchery (45 F) and the water in my basement tank (62 F) would be a problem, but all the fish seem to have survived it despite some initial sluggishness.

This time we also had a…