: Tufa is significantly lighter than most rocks. If a seller is charging high shipping for a "heavy" rock, it might actually be a denser limestone or "feather rock" (pumice).
: One of tufa's best features is that you can easily drill holes into it to plant saxifrages or other alpines directly into the stone. where to buy tufa rock
If you need tufa for a fish tank or terrarium, aquarium shops are the most reliable source. : Tufa is significantly lighter than most rocks
: High-end landscaping suppliers or stone yards may carry it, though it is rarer than granite or sandstone. It is often sold by the pound or ton. where to buy tufa rock