Carib Sea ACS00120 Crushed Coral for Aquarium, 15-Pound

The one crushed coral with aragonite, which gives as much as 25 times the buffering power of alternative crushed corals. Dolmite or oyster shell. Use in undergravel filtered systems or reverse float beds. An exceptional and economical performer. Grain Size 2.0-five.55 Mm
one hundred percentaragonite supports correct ph
grain size reduces built up detritus
re-create natural reef environments
made in the united states