Very nice rock

[EcoReefer]

Thanks for the nice comments. Reefer Rock is not only a great rock for its bio-filtering capability but a very nice looking rock as you can see with the pictures in this thread and the ones on the website.

The rock is fairly consistent from piece to piece in its characteristics. You can't go wrong by using a natural calcium carbonate rock that was formed by an ancient coral reef (geologically young compared to some of the dry rock that have been sold in the hobby over the years).