I do not have any pictures yet, nor have I tested, but here is how I designed my fluid bed. I used stiff but flexible 3/4"pvc spa hose for the tubes. Oversized holes were drilled in the conventional pattern to accept short pieces of 1/8" ID drip irrigation rigid riser tube. The main tubes were inserted into the box with holes up and then I friction fit the short straws into them, rotated the tube downward and adjusted the straws so that the water will spurt out at or near the bottom of the box to spread out laterally before rising.* This will roughly duplicate water actually rising through the bottom of the box to keep the material active. I am convinced that this design will work as well as and probably better than those of conventional design. If any fine gold escapes from this box then it would from one of conventional design too. *The top of my box is removable and held in place by tool box latches.