Review on Carib Sea ACS00120 Aquarium 15 Pound by Tara Clark

Excellent product. Helps bio-filter your aquarium and keep your reef tank looking natural. Just make sure you rinse it well with a colander before adding it to the aquarium. Some of the crushed coral will crumble into dust during shipping and will fog up your aquarium for days if you don't wash them off first. I added it to my live sand bag to help with cycling in the new aquarium and to provide different particle sizes for my bottom inversions and fish.