Biofloc technology is one of alternative method that used to control water quality on culture media using heterotrophic bacteria with addition of organic matter. This research was held to determine the effect of tapioca flour addition as source of biofloc carbon in culture media on water quality. survival rate and growth of catfish fry. The research held on February to March 2015 in L... https://www.roneverhart.com/Gul-Rune/