scholarly journals PENGARUH AZOLLA (Azolla microphylla) TERHADAP PERTUMBUHAN IKAN PATIN SIAM (Pangasianodon hypophthalmus) PADA MEDIA PEMELIHARAAN TANPA GANTI AIR

2017 ◽  
Vol 2 (2) ◽  
pp. 65
Author(s):  
Dian Rizki Putri ◽  
Syahrizal Syahrizal ◽  
M Yusuf Arifin
Keyword(s):  
Water Quality ◽  
Fish Feed ◽  
Fish Waste ◽  
Pangasianodon Hypophthalmus ◽  
Azolla Microphylla ◽  
Randomized Design ◽  
Water Media ◽  
Absolute Growth ◽  
Plant Grown ◽  
Improve Water Quality

Azolla (Azolla microphylla) aquatic plants can be used as a natural feed or as a source of artificial feed ingredients (pellets) of fish. In addition to Azolla plant as a fish feed, Azolla plant grown in fish maintenance water media can help improve water quality, because it can function as phytoremediation. The aim of this research is to see the influence of Azolla (Azolla microphylla) plant to growth of siamese catfish (Pangasianodon hypophthalmus) fish without any change of water. The method used in this research is complete randomized design with 4 treatments and 3 replications. Treatment A. Without Azolla microphylla (control), B.Azolla microphylla treatment of 150 g / m2, Treatment C. Azolla. microphylla as much as 250 grams / m2, and D.Azolla microphylla as much as 350 grams / m2. The result of Azolla plant with 150 gram / m2 is the best absolute growth of P1 1.7 gram / head patish, followed by P2 1,6, P3 1,00 and P0 0,93 gram / ekor. The association of Azolla count toward growth  of fish gave no significant correlation to growth R = 0.073, whereas the relation of the amount of azolla to ammonia correlated significantly R = 0.903. The best density of Azolla 350 gram / m2 plant on water surface media that can function as phytoremediation to absorb the remnants of fish and fish waste, so as to improve the water quality factor and at the same time can increase the growth of Siamese (Pangasianodon hypophthalmus) fish biomass and affect the production of Azolla biomass.Keywords: Phytoremediation, azolla, catfishTumbuhan air Azolla (Azolla microphylla) dapat dijadikan pakan alami  atau sebagai salah satu sumber bahan pakan buatan (pellet) ikan. Selain tumbuhan Azolla sebagai pakan ikan, Azolla yang ditanam dalam media air pemeliharaan ikan dapat membantu memperbaiki kualitas air, karena dapat berfungsi sebagai fitoremediasi. Penelitian yang dilakukan bertujuan melihat pengaruh tumbuhan  Azolla (Azolla microphylla) terhadap pertumbuhan ikan patin siam  pada media pemeliharaan tanpa ganti air. Metoda yang digunakan dalam penelitian ini adalah  rancangan acak lengkap (RAL) dengan 4 perlakuan dan 3 ulangan. Perlakuan A Tanpa Azolla microphylla (kontrol), Perlakuan B.Azolla microphylla sebanyak 150 gram/m2, Perlakuan C. Azolla. microphylla sebanyak 250 gram/m2, dan D. Azolla microphylla sebanyak 350 gram/m2. Hasil penelitian pemberian tanaman Azolla dengan jumlah 150 gram/m2 merupakan pertumbuhan mutlak terbaik rata-tata ikan patin P1 1,7 gram/ekor, diikuti P2 1,6, P3 1,00, dan P0 0,93 gram/ekor.. Hubungan jumlah Azolla terhadap pertumbuhan ikan memberikan korelasi tidak nyata bagi pertumbuhan R = 0,073, sedangkan hubungan jumlah azolla terhadap ammonia berkorelasi secara nyata R = 0,903. Kepadatan tanaman Azolla 350 gram/m2 terbaik pada permukaan air media  yang dapat berfungsi sebagai fitoremediasi menyerap sisa pakan dan kotoran ikan, sehingga dapat memperbaiki faktor kualitas air dan sekaligus dapat meningkat pertumbuhan biomassa ikan patin siam dan mempengaruhi produksi biomass Azolla.Kata Kunci: Fitoremediasi, azolla, ikan patin

scholarly journals PENGARUH TUMBUHAN AZOLLA (Azolla microphylla) TERHADAP KELANGSUNGAN HIDUP IKAN PATIN (Pangasianodon hypophthalmus)

2017 ◽  
Vol 2 (2) ◽  
pp. 58
Author(s):  
Yustika Anggraini ◽  
Syahrizal Syahrizal ◽  
M Yusuf Arifin
Keyword(s):  
Water Quality ◽  
Ammonia Concentration ◽  
Fish Feed ◽  
Correction Factors ◽  
Fish Waste ◽  
Pangasianodon Hypophthalmus ◽  
Azolla Microphylla ◽  
Randomized Design ◽  
Water Media ◽  
Plant Grown

Azolla (Azolla microphylla) aquatic plants can be used as a natural feed or as a source of artificial feed ingredients (pellets) of fish. In addition to Azolla plant as a fish feed, Azolla plant grown in fish maintenance water media can help improve water quality, because it can function as phytoremediation. The aim of this research is to see the influence of Azolla (Azolla microphylla) plant to survival rate on siamese catfish (Pangasianodon hypophthalmus) fish. The method used in this research is complete randomized design with 4 treatments and 3 replications. Treatment A. Without Azolla microphylla (control), B.Azolla microphylla treatment of 150 g / m2, Treatment C. Azolla. microphylla as much as 250 grams / m2, and D.Azolla microphylla as much as 350 grams / m2. The survival of the best catfish P1 54,20%, consecutive P2 28,30, P3 26,70 and P0 22,50. Initial ammonia concentration 0.33 mg / l after experiments P0 0.34, P1 0.27, P2 0.27 and P3 0.24 with correction factors P1 0.443, P2 435 and P3 0.541. The association of Azolla count toward survival of fish gave no significant correlation to survival R = 0.017, whereas the relation of the amount of azolla to ammonia correlated significantly R = 0.903. The best density of Azolla 350 gram / m2 plant on water surface media that can function as phytoremediation to absorb the remnants of fish and fish waste, so as to improve the water quality factor and at the same time can increase the growth of Siamese (Pangasianodon hypophthalmus) fish biomass and affect the production of Azolla biomass.Keywords: phytoremediation, azolla, catfishTumbuhan air Azolla (Azolla microphylla) dapat dijadikan pakan alami  atau sebagai salah satu sumber bahan pakan buatan (pellet) ikan. Selain tumbuhan Azolla sebagai pakan ikan, Azolla yang ditanam dalam media air pemeliharaan ikan dapat membantu memperbaiki kualitas air, karena dapat berfungsi sebagai fitoremediasi. Penelitian yang dilakukan bertujuan melihat efektifitas tumbuhan  Azolla (Azolla microphylla) sebagai fitoremediasi  pada media pemeliharaan ikan patin siam  (Pangasianodon hypophthalmus) Tanpa ganti air. Metoda yang digunakan dalam penelitian ini adalah rancangan acak lengkap (RAL) dengan 4 perlakuan dan 3 ulangan. Perlakuan A. Tanpa Azolla microphylla (kontrol), Perlakuan B.Azolla microphylla sebanyak 150 gram/m2, Perlakuan C. Azolla. microphylla sebanyak 250 gram/m2, dan D. Azolla microphylla sebanyak 350 gram/m2. Kelangsungan hidup ikan patin terbaik P1 54,20%, berturut-turut P2 28,30, P3 26,70 dan P0 22,50. Konsentrasi amonia awal 0.33 mg/l setelah percobaan P0 0,34, P1 0,27, P2 0,27 dan P3 0,24 dengan Faktor Koreksi P1 0,443, P2 435 dan P3 0,541. Hubungan jumlah Azolla terhadap kelangsungan hidup ikan memberikan korelasi tidak nyata bagi kelangsungan hidup R = 0,017, sedangkan hubungan jumlah azolla terhadap ammonia berkorelasi secara nyata R = 0,903. Kepadatan tanaman Azolla 350 gram/m2 terbaik pada permukaan air media  yang dapat berfungsi sebagai fitoremediasi menyerap sisa pakan dan kotoran ikan, sehingga dapat memperbaiki faktor kualitas air dan sekaligus dapat meningkat pertumbuhan biomassa ikan patin siam dan mempengaruhi produksi biomass Azolla.Kata Kunci: Fitoremediasi, azolla, ikan patin

scholarly journals Production performance and business analysis of clown loach Chromobotia macracanthus (Bleeker 1852) in recirculating systems with different stocking densities and water discharge

2021 ◽  
Vol 21 (2) ◽  
pp. 89-104
Author(s):  
Riska Puluhulawa ◽  
Tatag Budiardi ◽  
Iis Diatin ◽  
Irzal Effendi
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Business Performance ◽  
Water Discharge ◽  
Stocking Density ◽  
Production Performance ◽  
Recirculate Aquaculture System ◽  
Randomized Design ◽  
Two Factors ◽  
Absolute Growth

Efforts to improve the production performance of clown loach in recirculate aquaculture system can be done by increasing stocking density and water discharge. This study aimed to analyze the effect of increasing stocking density and water discharge on production performance, stress response and water quality in order to obtain the best stocking density and water discharge to obtain maximum profit in a short time. A factorial completely randomized design with two factors, i.e. the stocking density of 1, 2, and 3 fish L-1 and the water discharge of 0,05; 0,10; 0,15 L s-1 was performed. The volume of water used in each aquarium was 48 L and using a ½ inch faucet stop to regulate the water discharge from the inlet pipe. Clown fish fed Tubifex sp. with a feeding frequency of two times a day according to the treatment for 60 days. The result indicates that there was no interaction between the two factors on production performance, payback period, and R/C ratio. Stocking density has a significant effect on specific growth rate, absolute growth rate of individual weight, feeding consumption rate and R/C ratio of clown loach. Stocking density and water discharge had an interaction on the visual color of pectoral and caudal fins of clown loach. Different stocking densities with the combination of water discharge in this study resulted that the water quality were within tolerable range for clown loach so that they did not experience stress, as well as high production and business performance. It is recommended to intensify clown loach with a stocking density of 3 fish L-1 and 0,15 L s-1‑ of water discharge.

scholarly journals The Affection of Fine Bubbles (FBs) Application on Growth Siamese Catfish (Pangasianodon hypophthalmus) in Aquaponic System

2020 ◽  
pp. 30-36
Author(s):  
Rahmad Afdillah ◽  
Yuli Andriani ◽  
Zahidah Hasan ◽  
. Rosidah ◽  
. Iskandar
Keyword(s):  
Water Quality ◽  
Specific Growth ◽  
Good Condition ◽  
Quality Parameters ◽  
Control Treatment ◽  
Effective Pressure ◽  
Growth And Survival ◽  
Pangasianodon Hypophthalmus ◽  
Randomized Design ◽  
Completely Randomized Design

This research aims was to determine the effective pressure on fine bubbles technology on the growth of Siamese catfish fry in the aquaponic system. This study uses a completely randomized design with four treatments and three replications. Treatment A (Control), Treatment B (FBs at a pressure of 4,5 atm), Treatment C (FBs at a pressure of 5 atm and treatment D (FBs at a pressure of 5,5 atm). The parameters observed were Specific Growth Rate, Survival Rate and water quality (Temperature, pH, DO, Ammonia) Data were analyzed using variance with the F test at a 95% confidence level. The best treatment for catfish growth was treatment D (5,5 atm pressure), which gave the highest SGR value of 7,24% and the highest SR value of 100%. The value of water quality parameters were in good condition for the growth and survival of catfish.

scholarly journals The affection of fine bubbles (FBs) aplication on growth, feed efficiency of striped catfish, Pangasianodon hypophthalmus (Sauvage, 1878) and water quality in aquaponic system

2021 ◽  
Vol 21 (3) ◽  
pp. 277-290
Author(s):  
Yuli Andriani ◽  
Zahidah Zahidah ◽  
Rosidah Rosidah ◽  
Iskandar Iskandar
Keyword(s):  
Water Quality ◽  
Feed Efficiency ◽  
Suitable Condition ◽  
Plant Productivity ◽  
Quality Parameters ◽  
Control Treatment ◽  
Average Weight ◽  
Feed Conversion ◽  
Pangasianodon Hypophthalmus ◽  
Randomized Design

This research aims to determine the effect of fine bubble technology with different pressures on Siamese catfish seed's growth and feed efficiency in an aquaponic system. This research used a completely randomized design with four treatments and three replications. Treatment A (Control), Treatment B (FBs with a pressure of 4.5 atm), Treatment C (FBs with a pressure of 5 atm and treatment D (FBs with a pressure of 5.5 atm). The parameters observed were Specific Growth Rate, Feed Conversion Ratio, water quality (temperature, pH, DO, and ammonia), and plant productivity.  The seeds used were catfish seeds aged 16-36 days, 1-2 inches long, and weighed 0.26-0.29 grams. The container used is a fiber tub of 16 units with a size of 70 cm x 70cm x 70 cm. The feed used is commercial feed PF 1000 content crude protein 35%. The data were analyzed using variance with the F test at the 95% confidence level. The best treatment for catfish growth was treatment D (pressure 5.5 atm), which gave the highest SGR value of 7.24 ± 0.5 and FCR value of 1.19 ± 0.09. The value of water quality parameters is in suitable condition for the growth of catfish seed. The best plant productivity was found in treatment D with an average weight of 60.75 g.

scholarly journals Lettuce and water spinach growth in silver catfish (Pangasius Sp) culture using aquaponic system

Jurnal Agro ◽  
10.15575/8724 ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 148-157
Author(s):  
Yuli Andriani ◽  
Zahidah Zahidah ◽  
Yayat Dhahiyat ◽  
Herman Hamdani ◽  
Ristiana Dewi
Keyword(s):  
Water Quality ◽  
Block Design ◽  
Water Quality Management ◽  
Fish Growth ◽  
Stem Length ◽  
Fish Feed ◽  
Water Spinach ◽  
Silver Catfish ◽  
Randomized Block Design ◽  
Absolute Growth

Solid and liquid wastes from feces and fish feed residues can affect water quality, which in turn affect fish physiological processes, behavior, growth and mortality. So it is necessary to have water quality management in the aquaponic system. This study aimed to observe the growth of lettuce and water spinach as biofilters in silver catfish culture (Pangasius sp) using aquaponic system. The study was conducted at the Laboratory of Fisheries, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran, from March to April 2018. This was an experimental study using Randomized Block Design (RBD) with two treatments and six repetitions to compare between combination of silver catfish and water spinach with silver catfish and lettuce combination. The parameters observed were fish growth, fish survival, increase in  stem length, and increase in the number of leaves. The results show silver catfish and water spinach combination produced the highest crop with a stem length of 38.7 cm and more leaves with an addition of 16 leaves. A higher absolute growth of 7.79 grams fish-1 and 100% survival are also seen in this combination. Furthermore, water spinach is more effective as biofilter for aquaponic systems than lettuce.Limbah padat dan cair dari feses dan sisa pakan ikan dapat mempengaruhi kualitas air, yang selanjutnya memengaruhi proses fisiologis ikan, perilaku, pertumbuhan, dan angka kematian. Sehingga perlu adanya manajemen kualitas air pada sistem akuaponik. Penelitian ini bertujuan untuk mengamati pertumbuhan selada dan kangkung sebagai biofilter pada budidaya ikan lele (Pangasiussp) dengan sistem aquaponik. Penelitian dilaksanakan di Laboratorium Perikanan, Fakultas Perikanan dan Ilmu Kelautan Universitas Padjadjaran dari bulan Maret hingga April 2018. Penelitian ini merupakan penelitian eksperimental dengan menggunakan Rancangan Acak Kelompok (RAK) dengan dua perlakuan dan enam ulangan untuk membandingkan kombinasi Ikan Patin dan kangkung dengan kombinasi lele dan selada. Parameter yang diamati adalah pertumbuhan ikan, kelangsungan hidup ikan, pertambahan panjang batang, dan pertambahan jumlah daun. Hasil penelitian menunjukkan Kombinasi lele perak dan kangkung menghasilkan tanaman tertinggi dengan panjang batang 38,7 dan daun lebih banyak dengan penambahan 16 helai daun. Pertumbuhan absolut yang lebih tinggi sebesar 7,79 g ikan-1 dan kelangsungan hidup 100% juga terlihat pada kombinasi ini. Dengan demikan kangkung merupakan biofilter yang lebih efektif untuk aquaponik dibandingkan selada.

scholarly journals The effect of Red Paprika Extract (Capsicum Annuum) in Feed on the Color Intensity Level of Comet Fish (Carassius auratus)

2021 ◽  
pp. 37-45
Author(s):  
Kiki Haetami ◽  
Walim Lili ◽  
Roffi Grandiosa ◽  
Freddy Aditya Destiyantara
Keyword(s):  
Water Quality ◽  
Survival Rate ◽  
Quality Parameters ◽  
Intensity Level ◽  
Fish Feed ◽  
Observation Data ◽  
Color Intensity ◽  
Randomized Design ◽  
Significant Difference ◽  
Fish Survival

This study aims to analyze the effect of red paprika flour in fish feed to increase the color intensity of the Comet fish juvenile. The research method used a Complete Randomized Design experiment consist of four treatments and three replicates. The treatments consisted of various levels of addition red pepper extract, namely treatment A (0%), B (3%), C (5%) and D (7%). The investigation includes color intensity of the fish. Survival rate and water quality parameters data were also taken. The color observation data were analyzed using the Kruskal-Wallis analysis, if there was a significant difference, the Z test was performed. The results of this study indicated that the addition of 5% red paprika extract to the feed was the best treatment with an increase in the color intensity level of comet fish at 4.71. While the comet fish Survival Rate (SR) data in all treatments were observed to be 100% and the water quality during the maintenance period was in the optimal range and met the standards. The average temperature value was 24.7-26.4ºC, DO 5.6-5.8 mg/L and pH 6.67-7.53.

scholarly journals Penggunaan Tepung Buah Pepaya Carica papaya L Dalam Pelet Terhadap Efek Pertumbuhan Benih Ikan Nila Oreochromis niloticus

2018 ◽  
Vol 6 (1) ◽  
Author(s):  
Herol A. Tulung ◽  
Cyska Lumenta ◽  
Edwin L.A. Ngangi
Keyword(s):  
Feed Efficiency ◽  
Conversion Ratio ◽  
Fish Feed ◽  
Food Conversion ◽  
Daily Growth ◽  
Relative Growth ◽  
Food Conversion Ratio ◽  
Randomized Design ◽  
Absolute Growth ◽  
Different Doses

This study aimed to determine the effect of papaya flour at different doses on absolute  growth, daily growth, relative growth, feed efficiency, and food conversion. The treatments consisted of 0,  2.5%, 7.5%, 10% of papaya flour respectively, each with three replcations. The weight of fish were  about 18-23.58 g.  The fish were placed in aquaria with a density of  10 individual per aquarium. The experiment design is a complete randomized design. The results of analysis show that the treatments had no significant effect on growth, daily growth, relative growth, feed  efficient, and food conversion ratio. However, treatment C (7.5% papaya flour) gave the best on growth of fish, feed efficiency and food conversion ratio.

Pemanfaatan limbah padat Ikan Tuna melalui kegiatan budidaya Ikan Nila (Oreochromis niloticus), Studi kasus di Perusahaan abon UD Madurasa Kabupaten Manokwari

Cassowary ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 21-34
Author(s):  
Dedi Ariana ◽  
Roni Bawole ◽  
Vera Sabariah
Keyword(s):  
Water Quality ◽  
Animal Feed ◽  
The Body ◽  
Fish Feed ◽  
Relative Growth ◽  
Feed Manufacturing ◽  
Randomized Design ◽  
Nutritional Needs ◽  
Breakeven Point ◽  
The Impact

The tuna waste in Manokwari has an economic potential that can be used as fish meal animal feed or fish feed. The aim of this study was to determine the chemical contents of tuna waste flour, examine of tuna waste meal, determine the feed test impact to the tilapia growth, analyze the impact of feed to water quality and analyze the feed manufacturing businesses. The study was conducted for six months (January to June 2015) at UD Madurasa. This study used, a completely randomized design with five treatments, there were feed A (control) and four test feeds formulated using tuna waste flour and bran (feed B, feed C, feed D and feed E). The feeds were tested using tilapia sized 5-8 cm and weighted 9-10 g in average (belo phase), then a 750 belos were used and allocated into 15 containers (50 belos / container). Feed was given twice a day in the morning (7:00 a.m. to 08:00) and afternoon (16:00 to 17:00) for six weeks. The feed amount was 5% of the body weight. The results show that tuna waste flour contain nutrients over the nutritional needs by tilapia. The tested feed has nutritional value better than feed A. Feed A has the highest efficiency and value of relative growth of 24.56% and 92.79%. Feed C has an efficiency of 22.83%, Feed E (20.37%), Feed B (19.30%) and Feed D (17.82%), also the growth of relative feed values of C (87.14%), Feed E (64.69%), Feed B (63.04%) and Feed D (55.53%). The variance analysis was not difference, however all feed gave same effect on tilapia growth. The tested feed did not pollute the water and categorized as 2nd and 3rd of water quality. It is assumed that this business is properly to be run with breakeven point will be achieved when sales reached to 8 kg (Rp 130,000.00) or at 4.5 months.

scholarly journals Efektivitas Pemberian Bacillus sp. D2.2 pada Media Teknis Molase terhadap Kualitas Air dan Performa Pertumbuhan Udang Vaname (Litopenaeus vannamei)

Biospecies ◽  
2017 ◽  
Vol 10 (2) ◽  
Author(s):  
Ayu NOVITASARI ◽  
Ricky Nur ISKANDAR ◽  
Hefi Afizena ELVAZIA ◽  
Esti HARPENI ◽  
Tarsim TARSIM ◽  
...  
Keyword(s):  
Water Quality ◽  
Litopenaeus Vannamei ◽  
Survival Rates ◽  
Bacillus Sp ◽  
Feed Conversion ◽  
Daily Growth ◽  
Randomized Design ◽  
Absolute Growth ◽  
Water Quality Deterioration ◽  
Better Than

Vanamei prawns have fast growth and can reared in high density. it has an impact on water quality deterioration and disruption of survival rates and growth. Various ways to cope has been done, one of them is with probiotic bacteria. The new strain of D2.2 bacteria is thought to be effective of ammonia utilization. Probiotics with local bacteria Bacillus sp. D2.2 is cultured on molasses technical medium to be applied semi-mass. The purpose of this study is to asses the efectivity of Bacillus sp. D2.2 inthe molasses technical medium on water quality and growth performance of vaname prawns (Litopenaeus vannamei). The research was used complete randomized design (RAL) with four treatments, A (Control), B (Application of 5 ppm Bacillus sp. D2.2 cultured in molasses technical medium), C (Application of 10 ppm Bacillus sp. D2.2 cultured in molasses technical medium), D (Application of 15 ppm Bacillus sp. D2.2 cultured in molasses technical medium) were repeated three times each. The results showed no effect on water quality and shrimp survival rate, but absolute growth (W), daily growth rate (GR) and feed conversion ratio (FCR) showed that B and C treatment had better  than control. Keywords: Vaname shrimp, growth, Bacillus sp. D2.2, molasses technical medium

scholarly journals The effectiveness of the use of filter on the number of Nitrosomonas sp. and water quality in aquaponics systems

2018 ◽  
Vol 17 (1) ◽  
pp. 1
Author(s):  
Yuli Andriani ◽  
, Zahidah ◽  
Yayat Dhahiyat ◽  
Ujang Subhan ◽  
Irfan Zidni ◽  
...  
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Activated Carbon ◽  
Average Length ◽  
Fish Growth ◽  
Silica Sand ◽  
Filter Media ◽  
Randomized Design ◽  
Absolute Growth ◽  
Filter Water

<p><strong>ABSTRACT</strong></p><p>This study aims to determine the most effective type of living filter media for the bacteria Nitrosomonas sp. in order to improve water quality in aquaponics systems. The method used in this study was completely randomized design, consisting of five treatments and each was repeated three times. The treatments were: A (without addition of filter media), B (addition of palm fibers, silica sand, and activated carbon), C (addition of palm fibers, silica sand, gravel, and activated carbon), D (addition of palm fibers, silica sand, rocks, and activated carbon), and E (addition of palm fibers, silica sand, bioball, and activated carbon). Parameters measured were: 1) the number of Nitrosomonas bacteria, 2) water quality (ammonia, nitrate, and phosphate); and, 3) productivity of fish and Chinese spinach. Data were analyzed using a descriptive method. The findings show that the highest number of bacteria was found in treatment E, 9.29×105 CFU/mL on the bioball filter media and 4.43×105 CFU/mL in rearing tanks. The best water quality was in treatment B, with a concentration of ammonia of 0.17 mg/L, nitrate of 0.33 mg/L, and phosphate of 0.54 mg/L. Plant productivity was the best in treatment B in which the average length and weight reach 48.1 cm and 11.1 grams of plant/week, respectively. The best fish growth was seen in treatment C with an absolute growth rate of 4.4 grams and a specific growth rate of 1.9%/day. The recommended filter was made of Arenga pinnata fibers, silica sand, gravels, and active carbon of about 2 cm thick each.The results showed that the type of filter on the aquaponic system had an effect on the amount of Nitrosomonas sp. in water, water quality, and the productivity of Chinese spinach.</p><p>Keywords: aquaponics, filter, water quality, Nitrosomonas sp.</p><p><strong>ABSTRAK</strong></p><p>Penelitian ini bertujuan untuk menentukan jenis filter yang paling efektif sebagai media hidup bakteri Nitrosomonas sp. sehingga menghasilkan kualitas air yang baik dalam sistem akuaponik. Rancangan percobaan yang digunakan adalah rancangan acak lengkap, yaitu lima perlakuan dengan tiga kali pengulangan. Perlakuan dalam penelitian ini meliputi: A (tanpa penambahan media filter), B (penambahan media filter ijuk, pasir silika, dan karbon aktif), C (penambahan media filter ijuk, pasir silika, kerikil, dan karbon aktif), D (penambahan media filter ijuk, pasir silika, batu, dan karbon aktif), dan E (penambahan media filter ijuk, pasir silika, bioball, dan karbon aktif). Parameter yang diamati adalah: 1) jumlah bakteri, 2) kualitas air (meliputi amonia, nitrat, dan fosfat), serta 3) produktivitas ikan dan kangkung air. Data hasil penelitian dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa jumlah kelimpahan bakteri Nitrosomonas sp. tertinggi terdapat pada perlakuan E, yaitu 9,29×105 CFU/mL pada media filter bioball dan 4,43×105 CFU/mL pada media air pemeliharan. Adapun kualitas air terbaik yaitu pada perlakuan B dengan konsentrasi amonia 0,17 mg/L, nitrat 0,33 mg/L, dan fosfat 0,54 mg/L. Produktivitas kangkung terbaik yaitu pada perlakuan B dengan panjang rata-rata mencapai 48,1 cm dan bobot tanaman 11,1 gram/minggu. Pertumbuhan ikan terbaik terdapat pada perlakuan C, dengan nilai pertumbuhan ikan mutlak sebesar 4,4 gram dan pertumbuhan spesifik 1,9%/hari. Hasil penelitian menunjukkan bahwa jenis filter pada sistem akuaponik berpengaruh terhadap jumlah Nitrosomonas sp. dalam air, kualitas air, dan produktivitas tanaman kangkung. Filter yang disarankan dari hasil penelitian ini adalah yang tersusun atas ijuk, pasir silika, batukerikil, dan karbon aktif masing-masing setinggi ±2 cm.</p><p>Kata kunci: akuaponik, filter, kualitas air, Nitrosomonas sp., produktivitas tanaman</p>

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