Jim, Do you really think that's the reason? If you look at the habitats some of them come from, it makes sense. Unfortunately, we tend to think the gravel drains faster... NOT true! The tipping is an issue, and shipping is outlandish! SBOE has started the gravel trend too. I think that's one of the things I liked about the Motes video, the clay pots are more stable, and I don't have hanging space like some of you do. I've got a few that are going to be attached to the wire shelves if I don't move them soon.
