Hello All: We're at MACNA in Des Moines and are introducing our new NP-Active Pearls -- a form of biodegradable carbon polymer. How we are different is that we're being up front with what the polymer is, who makes it and where it's made. Plus we'll have research data and papers on using the NP-Active Pearls up our the website soon. The web site is www.npactivepearls.com. Here is a short video of the pellets in a CPR reactor. Our pearls are 100% PHA (poly-hydroxyalkanoates) made in the USA (Iowa) by Telles which is a joint venture between a MIT spin-off called Metabolix and Archer Midland Daniels (ADM). They produce the PHAs using corn sugar and genetically modified bacteria. The bacteria produce the PHAs as a way to store energy for future use. By optimizing the process the PHAs can be harvested in large quantities. Working with Telles and our partner Aquaculture Systems Technologies (AST) we've brought to market a new PHA based polymer that has been extensively tested in aquaculture system in both traditional denitrification systems and heterotrophic assimilation of nitrate and phosphate which is a safer method for use in home aquaria. The benefits of our bio-polymer include: Pure PHA with no fillers, binders or other chemicals added Made in the USA by a reputable partnership in a sustainable manner Certified ASTM marine biodegradable Scientifically tested in aquatics applications by AST We recommend using 3 ml of pellets per gallon of aquarium water. Start with 1/3 of the needed amount and add more over 2 to 3 weeks. Also the NP-Active Pearls will be consumed overtime (6 to 9 months) so you should periodically replenish the Pearls. Don’t wait for them to completely disappear before adding more.