Tom, I think the reason more people don't do this is because
most people come at planted tanks from a fishkeeping background and not the other way around. They're just used to keeping a tank full of water for the inhabitants. They're used to thinking of it as an aquarium, a tank full of water. People coming at it from a vivarium/terrarium background would probably come from the other direction as it seems more "normal" to them to start out mostly dry and then fill the sucker up with water. I want to do this, but I'll have to find somewhere to move the fish to first. So far I have resisted "MTS"

, well, mostly anyway. I've managed to keep it to a 55 and a 10, but if I do this all the fishies will have to live somewhere else for a while.