Here is the literature from Tropic Marin. So at least these are their claims. Randy this salt just became available in the US but it has been around in Europe and apparently has won a lot of people over. Maybe you can get them to send you a bucket to test!
Tropic Marin BIO-ACTIF ® is the result of intensive research into the causes and long-optimal coral growth and the factors affecting the welfare of fish. Die gewonnenen Erkenntnisse sind eingeflossen in neue Produkte. The lessons learned have been incorporated into new products. Ergänzt um einige bewährte TROPIC MARIN Produkte ist ein neuer Ansatz für die Meerwasseraquaristik entstanden. Complemented by some good TROPIC MARIN Products is a new approach developed for the Marine aquarium. Darin wird einem konstanten Nährstoffabbbau durch aktive Förderung der Mikrobiologie und einer dynamischen Kontrolle der Wasserchemie besondere Bedeutung beigemessen. This constant Nährstoffabbbau through the active promotion of microbiology and a dynamic control of water chemistry is often highlighted. Als Ergebnis schafft BIO-ACTIF Pflege und Wachstumsbedingungen so nahe an der Natur wie kein anderes Aquariensystem. As a result, BIO-ACTIF provides care and growing conditions as close to nature like no other aquarium system.
BIO-ACTIF offers marine aquarists significant advantages:
• The rapid recovery in the coral care, even for beginners;
• Advanced Riffaquarianer can without excessive burden very difficult and sensitive species to maintain, so far were considered to be untenable;
• Shared care of corals with very different care requirements, such as kleinpolypige and grosspolypige stony corals, together with leather corals with good growth and best conditions for all species;
• sponges and algae to grow more difficult under the nutrient-poor conditions of the usury BIOACTIF approach without and give the Wohnzimmerriff additional accents and a natural appearance riffähnliches;
• Active monitoring of pH and carbonate enable constant growth of corals, Kalkrotalgen and other Kalkbildnern;
• Active skimming and removal of suspended pollutants and the reef aquarium can always shine in the brilliant colors and perfect clarity