Inorganic nitrogen absorption in the aquaponics farming of sangkuriang catfish (Clarias gariepinus) at uneven retention periods

Abstract

<p align="center"><strong>Abstract</strong><strong></strong></p><p>Aquaponics is new aquaculture integrating the technology of fishes and plants due to less availability of land. This study aimed to determine the optimum retention period in the aquaponics farming of sangkuriang catfish (<em>Clarias gariepinus</em>) integrated with water spinach (<em>Ipomoea reptan</em>) to generate the water to support the catfish production. This study conducted in 40 days between May to June 2016 at Ciparanje Fish Hatchery Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran. The design of this study was completely randomized, with five treatments and three replications. The treatments retention periods were 5, 10, 15, 20 minutes, and control (no water flow). The study showed that the retention period affected water spinach’s inorganic nutrient absorption in sangkuriang catfish farm. The 15 minutes retention period gave the most desirable result, with a flow of 0.072 L/s that reduced 58.83% of nitrate, and 33.32% of ammonia has been produced by fish farming activities. The highest specific growth rate of the sangkuriang catfish obtained in 15 minute retention period of 4.01 %</p><p> </p><p>Keywords: aquaponics, sangkuriang catfish, water spinach, retention periods</p><p> </p><p> </p><p align="center"><strong>Abstrak</strong></p><p>Akuaponik adalah teknologi akuakultur baru yang mengintegrasikan ikan dan tanaman karena ketersediaan lahan yang semakin rendah. Penelitian ini bertujuan untuk menentukan periode retensi optimum pada budidaya akuaponik ikan lele sangkuriang (<em>Clarias gariepinus</em>) yang terintegrasi dengan kangkung air (<em>Ipomoea reptan</em>) untuk menghasilkan air yang mendukung produksi lele. Penelitian ini dilakukan selama 40 hari di Laboratorium Budidaya Ikan Ciparanje, Fakultas Perikanan dan Ilmu Kelautan, Universitas Padjadjaran. Penelitian ini menggunakan rancangan acak lengkap, dengan lima perlakuan dan tiga kali ulangan. Perlakuan berupa periode retensi 5, 10, 15, 20 menit, dan kontrol (tidak ada aliran air). Hasil penelitian menunjukkan bahwa periode retensi memengaruhi penyerapan nutrisi anorganik oleh bayam air dalam budidaya ikan lele sangkuriang. Periode retensi 15 menit memberikan hasil yang paling baik, dengan aliran 0,072 L/s mengurangi 58,83% nitrat, dan 33,32% amonia dalam media budidaya ikan. Laju pertumbuhan spesifik ikan lele sangkuriangtertinggi diperoleh pada perlakuan waktu retensi 15 menit, yaitu sebesar 4,01%. </p><p> </p><p>Kata kunci: akuaponik, ikan lele sangkuriang, kangkung darat, waktu retensi</p><p> </p><p> </p>

The effectiveness of filters on catfish Clarias gariepinus fry performance in the aquaponic system

“…This condition followed the study results of Kamauddin et al (2019) who stated that the use of cocopeat as a physical filter was insufficient to be utilized for water treatment in aquaponic system. The capability of water spinach as a good biological filter for catfish in aquaponic system was strengthened by the study results of Zahidah et al (2018) and Nazlia and Zulfiadi (2018). Zahidah et al (2018) stated that the combination of catfish and water spinach in an aquaponic system produced the best absolute growth rate at 7.8 ± 1.18 g. Meanwhile, the study results of Nazlia and Zulfiadi (2018) showed the highest survival rate and absolute growth rate of catfish in aquaponic system were obtained from the water spinach treatment, namely at 86.7% and 1.97 g, respectively.…”

“…The capability of water spinach as a good biological filter for catfish in aquaponic system was strengthened by the study results of Zahidah et al (2018) and Nazlia and Zulfiadi (2018). Zahidah et al (2018) stated that the combination of catfish and water spinach in an aquaponic system produced the best absolute growth rate at 7.8 ± 1.18 g. Meanwhile, the study results of Nazlia and Zulfiadi (2018) showed the highest survival rate and absolute growth rate of catfish in aquaponic system were obtained from the water spinach treatment, namely at 86.7% and 1.97 g, respectively. According to Setijaningsih and Suryaningrum (2015), water spinach is more effective to utilize nutrients in the flowing water from the catfish maintenance tank.…”

“…According to Effendi (2003); Primashita et al (2017), increased feed requirement of fish can cause increased metabolite waste, which then occurs a feces accumulation. According to Zahidah et al (2018), the capability of water spinach in absorbing nutrients can decrease along with the increased ammonia content. Therefore, the ammonia measurement result was increased.…”

Evaluation of Efficiency of Echinodorus palaefolius (J.F. Macbr.) Involved in the Clarias gariepinus (Burchell, 1822) Culture for Water Quality Recovery and Fish Growth Support

“…Catfish [Clarias gariepinus (Burchell, 1822)] is a very popular commodity for cultivation in Africa, Indonesia, and several other countries in the world because of its fast growth, disease resistance, and wide geographical spread (Elesho et al, 2021). Consequently, catfish production in Indonesia has increased rapidly, accounting for 55 691 t in 2004 and climbed dramatically in 2014, reached 543 774 t (Zahidah et al, 2018). In addition, catfish production from 2017 to 2018 increased from 841.75 × 10 3 t to 1.81 × 10 6 t (114.82 %) (FAO, 2018).…”