My only experience is with smaller countertop wine coolers, but one I used did manage to keep about a 10°F difference between the topmost and bottommost shelves. Not divided into neat zones though; the middle shelves are simply between the two temperatures, the lower the colder. I've never found the standard temperature rules for red/pink/white wine to necessarily be the best though, with for example, shiraz tasting better when served cooler than cabernet even though they're both red, so the variable temperatures proved useful. Some wine coolers work like most refrigerators - they use a compressor. Others don't use a compressor, which have the side benefits of being silent and making more efficient use of space. Both varieties can be made to cool different compartments to different temperatures if designed carefully. You may want to crosspost this question on the GW wine forum too.

Slone - I am also in the ABB club and have a busy counter also. I went through various stages and also needed to take a backsplash break! - I didn't want subway tiles and really wanted back painted glass. I finally figured out glass just didn't make it. I have samples from a zillion places. When I saw Chitown's backsplash - a light went off in my head. I am going with a very simple light cream crackle (Grazia Rixi Crema) with a band of accent and possibly a few medallions over the cooktop. I am going to use all 5x5 tiles - the bottom row will be straight, then a row of accent and the tiles above will be set at 45 degrees. There is a recent post (Who's backsplash is this) on the colors. I have a lot of tile samples to share with others...

Bama - forgot to answer your question about cutting the gg's....just took my tile nippers, lined 'em up and (amid lots of moaning and grunting!) kept squeezing till they snapped! SOme were too thick for my strength, but a little picking and choosing to find the right ones made it work out OK. Pat

There shouldn't be any reason it wouldn't work as a significant fraction of a soil. I couldn't find any information about the size gradient, so it's difficult to get a feeling about what ratio of ingredients would work best. I'm thinking it's considerably larger than screened Turface and most bark you would use. Because it's going to hoild a significant volume of water (probably more than the bark but less than the Turface). I'm thinking that 3 parts screened bark, 4 parts of the grow stones, and 2 parts of screened Turface would be a good starting part. Some pictures of the product next to some screened Turface would be helpful. Just a note - to get the most out of your mix, screening is important. Al