| Abstrak/Abstract |
Fish farming activities produce large amounts of waste which is
disposed to environment. It contains with ammonia and nitrite as toxic
substances to aquatic biota. On the other hand, it also contains nitrate as
macronutrient which is useful for vegetables. Aquaponics system provides
multiple benefits, namely the production of fish and organic vegetables as
by-products that potentially to be a source of income. The objectives of the
research were to analyse physical-chemical quality of red tilapia aquaculture
and cultivated vegetable in aquaponics system, fish farm wastewater
discharge for vegetable cultivation, bioconversion of aquaculture
wastewater for growing vegetable biomass, and the bioeconomic of the
system. The physical-chemical quality from water body of the system were
as followed pH= 7.2 - 7.6; Temperature = 27,4 - 28,0ºC ; EC = 392.0 - 400.0
µs/cm; TDS = 180.5 - 189.7 ; NO3= 3.751 - 5.266 mg.L-1. The total biomass
of green mustard in recirculating system was 92.50 kg/tray unit and in
dripping system was 138 kg/tray unit. In one harvest period of red tilapia,
the production of green mustard biomass was 1,152.5 kg, with an economic
value of IDR 8,643,750.00 and IDR 1,680,000.00 for the red tilapia biomass. |
