How can other Companies selling chemical filtration media imply their products perform equal to a Poly-Filter® in freshwater or marine aquarium?
Simply, because hobbyists don't demand Independent Laboratory Testing performed under EPA Standards and Methods of Analysis. Secondly, other companies add disclaimers to their packages i.e. "only for use on ornamental fish" to avoid FDA & USEPA Regulations. Third, hobbyists don't understand the relationship between quantity of other filtration media versus flow rate and Van der Waal's forces effects. Van der Waal's forces require 1 cubic foot (7.6 gallons) of filter medium per 3-5 gallons per minute of water flow. Poly-Bio-Marine, Inc.® U.S. Patented a new method by which Poly-Filter® avoids Van der Waal's forces effect.