แร่เงินจริงๆ ก็นี่ไง AZOO SILVER ION ACTIVE FILTER Ionic Silver for elimination of pathogenic risk to fish 1. Silver ions are proven to inhibit bacterial action. 2. Promotes pristine aquarium conditions. 3. Harmless to fish & plant life. 4. Does not induce resistance in pathogens. INGREDIENTS: SiO2, CaO, P2O5, Ag, Zn, Mg หรือ http://igitur-archive.library.uu.nl/student-theses/2010-0602-200220/UUindex.html The uptake and effects on survival of nano silver and nano titanium dioxide in brine shrimp (Artemia nauplii)