Finally got the bell siphons working and the media beds filled. 400 Gallons of water have been in the system for a month now, but I'm going to have to be patient while the new beds cycle. The Koi are still happy in the sump, but there's a few more that need to move in as water parameters improve, and the tilapia have outgrown their temporary home and need to move into the main tank soon.
Secondary filtration and heating systems will have to wait until the rest of the greenhouse is put in shape for winter.
