I cut out the shapes before I cut the top part of the barrel to maintain frigidity. I decided not to cut out the X's because I was concerned about the weight of the grow medium, collapsing the barrel.
After setting the top upside down on the bottom, I cut holes in the flange of the top and the edge of the bottom and tied them together in about four spots.
Tieing them together with lawn trimmer string just wasn't going to work.
Then the cycle starts over and the water is pumped back up. The pump is a 20 watt aquarium pump. This could be designed so that one pump could do several large tanks. and it could run on a solar panel.
I forgot to take pictures after I put my tomato plant and onions and garlic in. I did that on Sunday, and they were just fine today. No dead talopia either.