I've been getting some questions about my clay formula. PMs are always welcome, but here it is in a little more detail.
Do NOT use the clay mix I mention early on. It has too many organics for long life. I anticipate that as the organics decompose, it will cavitate and eventually collapse. I am now using this mixture. 75 percent Redart dry powdered clay from any pottery supply store. 25 percent powdered Bentonite (sodium or Calcium) clay. Now into this I mix in 25 percent organics (peat, coco fiber, ground up sphagnum...any or a mix). I like to mix this dry and then add water until it reaches the consistancy of modeling clay. I also much prefer the color of this clay mix. It's a nice reddish brown instead of gray like everybodys kitty litter mix. I really don't get that stuff! Cat's crap in it! Do you really think they care about the quality of the clay they use in kitty litter? They buy whatever is cheapest that week. They make the scented in the same factory as the unscented. How much perfume dust is left in the machinery when they run the unscented batch? I'll post they clay walls of my new vivs when they are finished.
Doug