Overall Rating:   Total Customer Reviews: (0) Seller: Amazon Synthetic ferric oxide hydroxide granules with an extremely high capacity for adsorbing phosphate from saltwater and freshwater. Also adsorbs silicate, and does not release adsorbed substances. Recommended by Julian Sprung for long-lasting...

Overall Rating:   Total Customer Reviews: (0) Seller: Amazon Overview High-purity powdered strontium. Incorporated by corals, clams, and other reef-building invertebrates into aragonite, the mineral that is secreted as skeletal material. Stronger and more economical than liquid strontium...