Water quality dynamic, production and profitability of catfish, Clarias sp. cultured at different design construction of aquaponic

Abstract

Aquaponic is an integrated culture between fish and plant. This technology is eco-friendly, social and economic accepted by fish farmers. Recently, aquaponic is very popular in Indonesia. The study aims to determine water quality dynamic, catfish and vegetable production, and profitability at different design construction. The different of design constructions as a treatment were as followed: A) aquaponic bed and B) aquaponic bucket. The result showed that water quality dynamic both of two types such as dissolved oxygen (DO) concentration showed decreased but nitrite, nitrate, total ammonia (TAN), and phosphate concentrations were increased with increasing culture period which aquaponic bed was better than that of aquaponics bucket. The removal efficiency of nitrite, nitrate, TAN, and phosphate at aquaponic bed were higher than that of aquaponic bucket. Growth, survival, and biomass both of catfish and vegetable (water spinach) at aquaponic bad were higher than that of aquaponic bucket (P<0.05). The profitability of aquaponic bed was better than that of aquaponic bucket. Design construction and aquaponic bed seemed to be suitable, benefit, and easier to manage at the time for cleaning and harvesting.