Application of aquaponic ebb-tide system on tilapia (Oreochromis niloticus) and cyprinid (Cyprinus carpio) to optimize growth performance

Abstract

The purpose of this study was to optimize the growth performance of tilapia (Oreocromis niloticus) and cyprinid (Cyprinus carpio) through aquaponic ebb-tide system. This study used a completely randomized design with 3 treatments and 3 replications: (a) aquaponic with tilapia, (b) aquaponic with cyprinid, (c) tilapia without aquaponic and (d) cyprinid without aquaponic. Water spinach used in this aquaponic system because it have the highest inorganic nitrogen reduction value in ammonia, nitrite and nitrate. The range of initial fish weight were 4-5 g and 6-7 cm length, with 1600 fish/concrete pond (sized 4x2 m2). The research was conducted for 50 days at the Center for Production, Inspection and Certification of Fishery Products, Ciganjur Jakarta. The observation variables included fish biological performance, water physicochemical parameters and Total N analysis on water spinach. The result showed that the highest average weight was found in treatment (a) 107.14±0.14g with daily growth rate of,14±0,043 g. The survival rate between treatments (a) and (b) was not significantly different (P>0.05), respectively 88,70±0,60 and 83.08±0.55. Water spinach biomass of two harvests from 3 replications were 100.04kg (a) and 93.57kg (b). While the absorption percentage of Total N in water spinach were 35.63% for treatment (a) and 34.25% for treatment (b).