Still in its infancy but so far working great. And a quick video of it all running. Things I've learned! You might notice there's two different kinds of metal frames. Left bed has square tubing, right bed has round. The square tubing has given us fits. The two support bars under that bed have bowed and cracked under the weight. The round tubing, no issues. We wound up shoving 2x4s underneath the square frame one for support. In the future we'll do that on all the beds. Another thing was not to let your significant other adjust the pump at 9 PM. You'll be up all friggin night tweaking the bed faucets to get the inflow/outflow equal again. The first time he did that I didn't know and woke up to a fish tank barely 1/4 full and a flooded yard. Feed training predatory fish is a major headache. Catfish and bluegills readily take to pellets. Bass, not so much. It can be done though, found a college that feed trained wild sand bass in two weeks, so am still working on it. Hydroton is not only expensive, it's been discontinued. There are alternatives on the market, but so far more expensive. I got pea gravel for $30 a yard, vs $25 per 50 pounds of Hydroton. I like its water retention ability and may continue to mix it in future beds, but won't ever try to go full clay pellets. With our nighttime temps already going to the low 40s the trick now will be building a small cold frame to go around it. That's this week/weekend's project, along with adding 2, 400 watt heaters to the fish tank and 1, 400 watt heater to the sump. I also want to build a pop can solar heater to pump hot air underneath the beds during the day, boxing in the space underneath each bed with 1" styrofoam and filling it with old gallon water jugs full of water. Thinking they will heat up all day, and help cut down heat drop overnight. It's a theory anyway, we'll see what happens. Future additions! Before anyone says I'm defeating the purpose of the beds by throwing minnows and goldfish into the sump, that's just temporary. I'm going to be setting it up as a natural, biological filter using dwarf cattails, bog iris, etc. I'd put snails in there but they breed like mad and I'm afraid they'll get into the whole system. We also have the totes to expand this to a total of 8 beds, 4 sumps, 2 IBC tote fish tanks and another 160 gallon nursery tank, but will hold off on the expansion until spring.