| dc.description.abstract | Recirculation system is one way to improve the quality of water as a medium for
the maintenance of fish in aquaculture. Circulation of water is one way to maintain
water quality. Circulation can keep the accumulation of toxic products of metabolism or
collect so that the levels of poison can be reduced. This study aims to determine the
growth rate and survival of catfish (Pangasius sp.) by providing treatment recirculation.
This study used an experimental method an observation. Filters are used in the
recirculation system consisting of sand, fibers, zeolites, activated charcoal, gravel and
water hyacinth. The result showed that the average weight of fish growth in treatment 1
of 6,69 g, Treatment 2 of 5,19 g. Fish specific growth rate of 2,77% treatment, treatment
2 of 0,72% p<0,00 very significant. Daily growth rate in treatment 1 0,17% in treatment
2 of 0,04% p<0,00 very significant. Water quality in this study had an average value in
the treatment of 1. Temperature 27,2 0C, DO 5,82 ppm, pH 7,66, NO3 0,00, PO4 0,03
ppm, NH3 0,02 ppm. Treatment of 2, temperature 27,8 0C, DO 6,32 ppm, pH 8,18, NO3
0,02 ppm, PO4 0,01 ppm, NH3 0,11 ppm. | en_US |
