Boyd's Chemi-Pure Elite:
http://www.petdiscounters.com/c569/Boyds-Chemi-Pure-Elite-p7112.html
From this:
"Chemi-Pure Elite is a precise formula for use with either fresh, reef, and marine aquariums as a chemical absorption filter, ion generator and exchange unit, which positively keeps the pH at a constant level. Ammonia and nitrate scavenging formula removes cooper metal, phosphates, ions, odors, all pollution, gasses, carbon dioxide, and color from aquarium water.
Chemi-Pure quickly buffers pH harmlessly and without any shock to the fish.
Newly collected marines or fishes from old water may be transferred to Chemi-Pure filtered water without harm as this remarkable formula neutralizes the fright and shock systems of fishes.
Chemi-Pure Elite formula now contains Ferric oxide, which helps remove red slime and PO4 (phosphates from the water, giving your coral and fish a healthy environment to grow and live. Packaged in a sealed nylon filter bag."
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This is not the same product as ChemiClean. This product contains a GFO to help reduce phosphate levels.