i was at a stone suplier looking for rocks for my fw pond and found some caled lace rock. i was woundering if this could be used in a salt water tank as a reef base looks alot like live rock at the lfs (just not live)but about 1/20th the price. i asked the people at the stone yard and they said that they dident know about use in salt water but that they mainly sell it to fish stores.