My favorite nursery told me today that it has stopped carrying vermiculite because vermiculite has asbestos in it. The nursery is large and well-known in the San Francisco-Berkeley area for its quality. Can anyone shed light on this? I was just about to buy some vermiculite to mix with the substrate in my new plant tank. Greg. Tong San Francisco, CA, USA gtong at sirius_com "Every infinity is composed of only two halves."