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Öğe Adsorption Process of Ammonium by Natural Zeolite (Clinoptilolite) from Aqueous Solution for Aquaculture Application(2019) Şahin, Dilek; Öz, Meryem; Sertaşı, Eda; Öz, Ünal; Karslı, Zafer; Aral, Mustafa OrhanAmmonia is an important nutrient in primary production, but high ammoniaconcentration is directly or indirectly toxic to many species of aquatic organisms.Ammonia and other toxic metabolites can be managed by adsorption and ionexchange. Zeolite is naturally occurring structured, aluminosilicate with highcation exchange and ion adsorption capacity. The purpose of this study was todetermine the effects of zeolite on the ammonium adsorption at different particlesizes (0.075 mm, 3-5 mm) and adsorbent dosages (5 g/l, 10 g/l, 15 g/l) fromaquatic solution. This research was conducted by trial groups with 3 repetitionsduring 330 min. Water temperature, pH, dissolved oxygen and ammonium valueswere measured during the trial period at regular intervals. Depending on therelevant literature, TAN (Total Ammonium Nitrogen) and adsorption efficiencywere also calculated. This study values showed a decrease of TAN concentrationin all the groups with increasing contact time. For different particle size andadsorbent dosage of zeolite, the best efficiency (44.1%) is determined at added 15g/l and 0.075 mm zeolite group (P˂0.05). Our results revealed that zeolite mightbe used for ammonia removal in aquaculture.Öğe Determining the Usage Properties of Some Natural Substrate Materials in Submerged Macrophyte Vallisneria sp. Culture(2024) Öz, MeryemIn this research, which targets removing nutrients resulting from the metabolic wastes of fish and unconsumed feed from the environment in aquarium systems where fish, plants, and ground material are used in the same environment and use them as plant nutrients, it was aimed to determine the usage properties of zeolite, leonardite and diatomite materials on the growth parameters of the Vallisneria sp. plant. The study was conducted in three stages for 8 months. Trial groups were formed by adding the adsorbent mixture of the feed having a 40% protein value to the first group (G1), the adsorbent mixture of the feed having a 33% protein value to the second group (G2), and the adsorbent mixture without feed to the third group (G3). When the SGR values at the end of the experiment were compared, there was no statistical difference between the G1 and G2 groups, which contained 40% and 33% protein (P>0.05). On the other hand, both groups (G1, G2) showed significantly higher (P<0.05) growth compared to the control group (G3). In this study, it was determined that the natural adsorbent mixture supported the growth of the Vallisneria plant for approximately 8 months and that adding adsorbent mixture enriched with nutrients is necessary at certain intervals.Öğe Doğal zeolit klinoptilolitin yavru alabalık (Oncorynchus mykiss, W., 1792) taşımacılığında kullanımı(2010) Öz, Meryem; Şahin, Dilek; Aral, OrhanCanlı balık naklinde amonyak birikimi zararlı etki yaptığı için en önemli sorunlardan biridir. Azotlu bileşiklerin sucul ortamdan uzaklaştırılması konusunda, amonyumu (NH4) % 90’a va-ran ölçülerde tutma kapasitesine sahip olan klinoptilolit türü zeolitler, ekonomik ve verimli bir materyal olarak dikkatleri üzerinde toplamıştır. İyon değişimi, adsorbsiyon, moleküler ayırma, dehidrasyon ve kataliz gibi eşsiz özelliklere sahip olan klinoptilolit su ürünlerinde bazı su pa-rametrelerini düzenleyici olarak etkili ve ekonomik bir şekilde kullanılabilme alt yapısına sahip mineral bir maddedir. Bu araştırmada, yavru alabalık (ortalama 5.5 0.01 g) taşımacılığında doğal bir zeolit olan klinoptilolitin ((Na _{0.5} K2.5) (Ca _{1.0} Mg _{0.5}) (Al_6, Si _{30}) O _{72}. 24 H _2O) amonyum tutumu üzerine etkisinin incelenmesi amaçlanmıştır. Araştırma, 3 tekerrürlü 3 grup (Kontrol 0 g/l, Grup I 7 g/l, Grup II 14 g/l klinoptilolit) üzerinden polietilen taşıma poşetleri kullanılarak yürütülmüştür. Su/oksijen oranı 1/4, su sıcaklığı 16 C olarak ayarlanmıştır. Araştırma sonunda su parametreleri ölçülmüş ve klinoptilolitli grupların kontrol grubuna göre amonyumu (NH4) tutma oranının istatistiksel açıdan önemli (p0.05) olduğu belirlenmiştir. Litreye 7 gram zeolit eklenen Grup I ile litreye 14 gram zeolit eklenen Grup II arasında istatistiki açıdan fark çık-mamasından (p0.05) dolayı, bu deneme koşullarında zeolitin katılım miktarının optimum 7 g/l olmasının yeterli olacağı düşünülmektedir.Öğe Effect of Bentonite's Different Rates to Ammonium Removal in Aquatic Conditions(Tokat Gaziosmanpasa University, 2018) Sahin, Dilek; Sertasi, Eda; Öz, Meryem; Öz, Ünal; Karsli, Zafer; Aral, OrhanAmmonia has a high toxic effect for all living forms. When exposed to in low quantities, it can be tolareted by the living forms. Compared with clay minerals, bentonite has a high usability due to its high adsorption capacity and low cost. In this study, it was aimed to determine the effects of two different amount of bentonite on the ammonium adsorption in freshwater at 17±1°C. In this research two trial groups with 3 repetitions were created for two different bentonite rate. Experimental groups were prepared by adding 2 liter of water and NH4Cl to each bottle to give an NH4+ amount of 10 mg/l. After that, two amounts of bentonite (7 g/l, 14 g/l) were added to the bottles. Water temperature, pH, dissolved oxygen and TAN (Total Ammonium Nitrogen) values were determined during the trial period. At the end of trial NH3 values were calculated as 0.461±0.01 mg/l and 0.463±0.01 mg/l in different amount of bentonite groups (7 g/l, 14 g/l), respectively. There were difference in TAN values between the experimental groups (p<0.05). As a result in this study, it has been determined that the amount of 14 g/l bentonite is the ideal amount for ammonium removal in aquaculture.Öğe EFFECT OF FROZEN WHITE WORM (Enchytraeus sp.) ON GROWTH OF PLATY (Xiphophorus maculatus Günther(2017) Şahin, Dilek; Öz, Meryem; Karslı, Zafer; Aral, Orhan; Bahtiyar, MehmetIn this study, for the first time, effects of live food on platy (Xiphophorus maculatus Günther, 1866), were investigated by using frozen white worm (Enchytraeus sp.). Aquarium fish used in this study were fry with an average weight of 0.177-0.180 ±0.005 g in different groups. In the experiment, 135 fry Xiphophorus maculatus were used. Fish weights were determined, and they later were put as 15 individual in aquariums in order to breed with three different experimental feed treatments (frozen white worm, frozen white worm combined with traditional aquarium fish feed and traditional aquarium fish feed). Water temperature was determined as 23.7 ±0.05 °C in during of experiment. The fish were fed with three diet to satiation twice daily (09:00, 15:00) in during two months. In the end of the experiment average final weight was determined 0.257 ±0.01 g, 0.258 ±0.01 g and 0.211 ±0.01 g, fed on with frozen white worm, frozen white worm combined with aquarium fish feed and aquarium fish feed groups, respectively and there were significant differences between T2 (frozen white worm+combined with aquarium traditional fish feed) and T3 (aquarium traditional fish feed) groups of average final weight (p˂0.05)Öğe EFFECT OF FROZEN WHITE WORM (Enchytraeus sp.) ON GROWTH OF PLATY (Xiphophorus maculatus Günther, 1866)(Istanbul Üniversitesi, 2017) Sahin, Dilek; Öz, Meryem; Karsli, Zafer; Aral, Orhan; Bahtiyar, MehmetIn this study, for the first time, effects of live food on platy (Xiphophorusmaculatus Günther, 1866), wereinvestigated by using frozen white worm (Enchytraeus sp.). Aquarium fish used in this study were fry with an averageweight of 0.177-0.180 ±0.005 g in different groups. In the experiment, 135 fry Xiphophorusmaculatus were used. Fish weights were determined, and they laterwere put as 15 individual in aquariums in order to breed with three differentexperimental feed treatments (frozen white worm,frozen white worm combined with traditional aquarium fish feed and traditionalaquarium fish feed). Water temperature was determined as 23.7 ±0.05°C in during of experiment. The fish were fed withthree diet to satiation twice daily (09:00, 15:00) in during two months. In the end of the experiment average final weight was determined 0.257 ±0.01 g, 0.258 ±0.01 g and 0.211 ±0.01 g, fedon with frozen white worm, frozen white worm combined with aquarium fish feedand aquarium fish feed groups, respectively and therewere significant differences between T2 (frozen white worm+combined withaquarium traditional fish feed) and T3 (aquarium traditional fish feed) groupsof average final weight (p?0.05).Öğe Effect of Natural Diatomite Different Sizes on Ammonia Adsorption in Aquarium Water(2023) Şahin, Dilek; Öz, Meryem; Öz, ÜnalIn this study, it was aimed to examine the effects of four different sizes of diatomite on the retention of ammonium in water. The trial was planned into 5 groups of 3 replicated without fish and aeration. In the plastic aquariums where the trial was conducted, 500 ml of tap water, 0.5 g (47.5% crude protein, 6.5% crude oil, 2% cellulose, 6% moisture) and 3 g of diatomites of different sizes (excluding the control group) were placed in each replicate.When the mean water parameter values at the end of the trial were examined, there was no statistical difference in water temperature, dissolved oxygen and pH values (P>0.05). However, in NH4 and TAN values, it was found that the statistically determined difference between the groups was significant (P<0.05). When the ammonium values were compared between the diatomite groups and the control group, it was found that 25.27%, 28.62%, 31.82% and 34.45% lower in D1, D2, D3 and D4 groups, respectively.. As a result, diatomites of different sizes; It has been established that it does not have a negative effect on important water parameters such as pH and dissolved oxygen. According the results of this study, in which the effects of four different sizes of diatomite on water parameters were investigated, show that it can contribute positively to keeping ammonia values, which is extremely important especially for fish farming, at lower values.Öğe EFFECTS OF DIFFERENT FEEDING FREQUENCIES ON THE GROWTH OF KOI CARP (CYPRINUS CARPIO) FRY(Istanbul Üniversitesi, 2017) Öz, Meryem; Aral, Orhan; Sahin, Dilek; Erik, HaticeThis study was conducted to investigate the effects of feeding frequencies on the growth of koi carp. Juvenile (weight: 0.015 ±0.001 g) koi carp (Cyprinus carpio) were fed two, three, and five times per day with a ration comprising “granule fish feed” equivalent to 18% of their body weight during the entire experimental period of 60 days.At the end of the experiment, the mean weight and the mean weight gain were 0.474 ±0.060, 0.494 ±0.090, 0.579 ±0.050 g; 0.459 ±0.055, 0.479±0.089, 0.564 ±0.046 g for the fish fed two, three, and five times per day, respectively. Feed conversion ratio, specific growth rate, protein efficiency ratio, and survival rate were found to be 2.43 ±0.070, 2.89 ±0.340, 2.55 ±0.070, 5.73 ±0.190, 5.77 ±0.300, 6.04 ±0.090, 0.89 ±0.02, 0.75 ±0.09; 0.81 ±0.02; 70 ±11.5, 70 ±5.77, and 66.66 ±3.33; respectively. No significant differences were observed among the fish groups fed with different frequencies in terms of weight gain, feed conversion ratio, specific growth rate, protein efficiency ratio, and survival rate (p>0.05).Öğe First report of Chryseobacterium sp. From koi (Cyprinus carpio) in Turkey(Israeli Journal of Aquaculture - Bamidgeh, 2016) Didinen, Behire Işıl; Onuk, Ertan Emek; Öztürk, Türkay; Metin, Seçil; Öz, Meryem; Çayli, Özge; Kubilay, AyşegülIn this study, we isolated Chryseobacterium sp. from koi in Turkey. The disease outbreak occurred in fish weighing 10-300g (water temperature 9-10°C) in November 2011- February 2012. The cumulative mortality rate was approximately 55% over 4 months. Infected koi exhibited anorexia, weakness, emaciation, damage to dorsal and caudal fins, grey-white skin discoloration (1-1.5cm) in the head area, large open wounds in skin with disease progression, necropsy findings, paleness of the liver, enlarged spleen and kidney, acidic fluid in the body cavity. Samples for bacteriological examinations were collected from the kidney, liver, and spleen using sterile swabs; these samples were streaked onto Anacker ordal Agar and incubated at 18°C for 48 h. Five bacterial isolates were obtained from diseased fish. Phenotypic characteristics of the isolates were determined by conventional methods and rapid identification kits, API 20NE, and API ZYM. Comparative 16S rRNA gene sequence analysis demonstrated that isolate Sin57 belonged to the genus Chryseobacterium, with highest sequence similarity (98.5 %) to C. aahli T68T and C. limigenitum SUR2. © 2016, Israeli Journal of Aquaculture - Bamidgeh. All rights reserved.Öğe Growth Performance and Feed Utilization of Koi Carp (Cyprinus carpio L., 1758) Fed Partial or Total Replacement of Fish Meal with Hazelnut Meal and Soybean Meal(Journal of Animal and Veterinary Advanses, 2011) Yeşilayer, Nihat; Öz, Meryem; Karslı, Zafer; Aral, Orhan; Karaçuha, Ali; Öz, ÜnalThe effects of soybean and hazelnut meals as partial and total replacements of fish meal were studied on the growth performance and feed utilization of Koi carp juvenile (Cyprinus carpio L., 1758). Juvenile fish (mean initial weights 0.12 g) were fed five isonitrogenously (350 g kg?1) and isocalorically (4.20 kcal g?1) diets with 50 or 100% of the fish meal protein replaced by soybean and hazelnuts protein. The control diet contained fish meal as major protein source. A total of 225 juvenile koi were randomly assigned to each treatment which was replicated three times with 15 fish each. The fish were fed with these diets for 65 days. The results showed that Final Body Weight (FBW), Relative Growth Rate (RGR) and Protein Efficiency Rate (PER) were not significantly different among groups. Fish fed control, 50% SM, 50% HM and 100% SM diets had similar Specific Growth Rate (SGW) values while fish fed the 100% HM diet had lower SGR values than those of other diets (p<0.05). The FCR values of fish fed 50% SM and 50% HM diets were significantly different than that of 100% HM (p<0.05). The highest FCR was obtained from 50% HM diet. The results indicated that koi carp juvenile can be cultivated with feeding diets containing 50% SM, 100% SM and 50% HM without any adverse effect on growth performance of fish.Öğe Investigation of Ammonium Saturation and Desorption Conditions of Clinoptilolite Type Zeolite in Aquarium Conditions(2017) Öz, Meryem; Şahin, Dilek; Öz, Ünal; Karslı, Zafer; Aral, Mustafa OrhanBu çalışmada, doğal bir filtrasyon materyali olan klinoptilolit türü zeolitin, akvaryum yaşamının kontrol altında tutulması için zorunlu olan parametrelerden amonyumun adsorpsiyonunu, doygunluğa ulaşmasını ve desorpsiyonunu belirlemek amaçlanmıştır. Akvaryum suyunda başlangıçta Z1: 20 mg/l TAN ve Z2: 40 mg/l TAN olarak belirlenen konsantrasyonların, deneme sonunda Z1'de 10 mg/l TAN ve Z2'de 24 mg/l TAN konsantrasyonlarına kadar adsorplandığı saptanmıştır. Zeolitlerin doygunluğa ulaştığı bu safhadan sonra desorpsiyon sistemi düzenlenerek 5 litrelik akvaryumlarda 3 tekerrürlü 2 grup oluşturulmuştur. Beş günlük araştırma süresince her gün aynı saatte (10.00) su parametreleri belirlenmiştir. Denemenin başlangıcında Z1 ve Z2 gruplarında 0,4 ± 0,00 mg/l TAN ortalama değerleri, deneme sonunda Z1 ve Z2 gruplarında TAN değerleri sırasıyla 1,55 ± 0,176 mg/l (%15,5) ve 2,153 ± 0,27 mg/l (%13,5) olarak tespit edilmiştir. Bu çalışmada elde edilen veriler değerlendirildiğinde, zeolitin doygunluğa ulaştığı zaman, tutulan amonyum miktarı ile orantılı olarak desorpsiyon yaptığı tespit edilmiştir. Yoğun akuakültür sistemleri veya akvaryum koşullarında, bu veriler dikkate alınarak, belirli sürelerde zeolitin yeniden aktifleştirilmesi önerilmektedir.Öğe Investigation of the Use of Zeolite (Clinoptilolite) As Aquarium Filtration Material for Electric Blue Hap (Sciaenochromis ahli)(2021) Öz, Meryem; Şahin, Dilek; Karslı, Zafer; Aral, Orhan; Bahtiyar, MehmetIn this study, the effects of using zeolite, both inside and outside the filter, on water quality and the growth of electric blue hap (Sciaenochromis ahli) were investigated. The 3-month study consisted of 7 groups in triplicate. One of the groups was designated as the control, and zeolite was not used in this group. For the remaining 6 groups, zeolite was placed in tulle bags and used both inside and outside the filter in 3 various ratios (0.35, 0.70, 1.05 g l-1). The statistical differences between groups for certain water quality parameters pH, NH3) were significant (P<0.05), while the statistical differences between groups for other parameters (water temperature, dissolved oxygen) were found to be insignificant (P>0.05). Furthermore, the growth parameters, feed conversion ratio, and survival rate of the electric blue hap were determined. At the end of the study, the differences between weight gain, specific growth rate and feed conversion ratio were determined as statistically insignificant (P>0.05). At the end of the study, when the data were evaluated, no negative effects on the growth parameters and water parameters of the ahli cichlid fish were determined. Therefore, it is advisable to place zeolite in mesh bags at the bottom of the aquarium and in the aquarium filter to prevent ammonia from reaching high concentrations. Thus, when the findings on pH and NH3 of the present study were evaluated, it can be suggested that low ratios as 0.35 g l-1 of zeolite may be used in tulle bags on floor or inside the filter to prevent ammonia rising to high concentrations.Öğe Japon Balığında (Carassius auratus) ichthyophonus hoferi enfeksiyonu(2010) Öztürk, Türkay; Özer, Ahmet; Taşkaya, Gökay; Öz, Meryem; Aral, OrhanBu araştırmada, japon balığının (Carassius auratus L., 1758) bazı iç organlarında tespit edilen Ichthyophonus hoferi enfeksiyonu incelenmiştir. Patojen, sporadik ölümlerin görüldüğü özel bir akvaryumda ölümlerin nedenini araştırmak amacıyla incelenen C. auratus balığında tespit edilmiştir. Kalp, karaciğer, dalak ve böbreklerden hazırlanan ezme preparatlarda etrafı kalın fibröz bir zarla çevrelenmiş, ortalama 200-250 ?m çapında, küre şekilli ve çok çekirdekli bir morfolojik özellik gösteren etken Ichthyophonus hoferi olarak tanımlanmıştır. Ichthyophonus hoferi patojenine karşı konak reaksiyonu olarak belirlenen granulom gelişim aşamaları detaylı olarak verilmiştir.Öğe KOI (CYPRINUS CARPIO) YAVRULARINDA FARKLI YEMLEME SIKLIĞININ BÜYÜMEYE OLAN ETKİSİ(2017) Erik, Hatice; Şahin, Dilek; Aral, Orhan; Öz, MeryemBu çalışmada, farklı yemleme sıklığının (günde 2, 3, 5 defa) koi (Cyprinus carpio Linneaus, 1758) yavrularının büyümesi üzerine etkileri araştırılmıştır. Çalışmada ortalama canlı ağırlıkları 0,0150,001 g olan balıklar kullanılmıştır. 60 gün boyunca ticari akvaryum balık yemi ile canlı ağırlıklarının %18 oranında beslenmişlerdir. Deneme sonunda ortalama canlı ağırlıklar ve ortalama canlı ağırlık artışı değerleri sırasıyla günde 2, 3 ve 5 defa yemlenen gruplar için 0,4740,060 g, 0,4940,090 g ve 0,5790,050 g ve 0,4590,055 g, 0,4790,089 g, 0,5640,046 g olarak tespit edilmiştir. Yem değerlendirme oranları sırasıyla 2,430,070, 2,890,340, 2,550,070, spesifik büyüme oranları sırasıyla 5,730,190, 5,770,300, 6,040,090; protein etkinlik oranları sırasıyla 0,890,02, 0,750,09, 0,810,02 ve yaşama oranları ise sırasıyla 7011,5, 705,77, 66,663,33 olarak bulunmuştur. Yapılan istatistiksel analizler sonucunda; ortalama canlı ağırlık artışı, yem değerlendirme oranları, spesifik büyüme oranları, protein etkinlik oranları ve yaşama oranları açısından gruplar arasındaki farkın önemsiz olduğu saptanmıştır (p0,05). Deneme verileri arasında istatistiksel bir fark olmamasına rağmen, büyüme değerleri (ortalama ağırlık kazancı ve spesifik büyüme oranı) yemleme sıklığı arttıkça artmıştır. En yüksek büyüme değerleri günde 5 defa yemlenen grupta elde edilirken, yem değerlendirme ve protein etkinlik oranlarının en ideal değerleri günde iki defa yemlenen grupta belirlenmiştir. Ayrıca yaşama oranı da en iyi değeri günde 2 ve 3 defa yemlenen grupta gösterirken en düşük değer günde 5 defa yemlenen grupta belirlenmiştir. Bundan dolayı günde iki defa yemleme yapılmasının yetiştiriciliğin ekonomikliği bakımından önerilebileceği sonucuna varılmıştır.Öğe Suların, Su Taşıma ve Depolama Yapıları Üzerindeki Etkileri ve Alınması Gerekli Önlemler(Su Ürünleri Mühendisleri Derneği, 2006) Öz, Ünal; Öz, MeryemSu ürünleri yetiştiriciliğinde en çok kullanılan malzemelerden biri olan betonun, ortam şartlarının kimyasal ve biyolojik etkilerine karşı dayanıklı olması "servis ömrü" olarak da tanımladığımız dayanıklılık özelliğini artırması bakımından önemlidir. Bu makalede, bu etkilerin neler olduğu incelenmiş ve alınması gerekli önlemler belirtilmiştir.Öğe The Effect of Natural Zeolite Clinoptilolite on Aquarium Water Conditions(2016) Öz, Meryem; Şahin, Dilek; Aral, OrhanDetermination of the effects natural zeolite clinoptilolite on the aquarium water conditions was assessed in this study. For this purpose 2 different applications were performed. For the first application 7 grams of zeolite (Z7) was put to aquarium directly and for the second application same quantity of zeolite was put inside a net bag (NZ7) and placed in the aquarium. The third group was described as the control group without zeolite (C). Equal amounts of fish feed were added into the aquariums of the three groups and data on water quality parameters (temperature, pH, NH3, TAN) were collected for 12 days. At the end of the trial, level of ammonia which increased in proportion to time was lower in groups with zeolite after day 4, compared to the control group. While no statistical difference was found among mean water temperatures of trial groups (P>0.05), it was found that the difference between pH and ammonia levels was significant (P<0.05).Öğe The Effect of Zeolite (Clinoptilolite) as a Feed Additive and Filter Material for Freshwater Aquariums(2023) Öz, Meryem; Aral, OrhanAmmonia, which occurs as a natural result of aquaculture in production facilities, has a negative effect on the quality of aquaculture water and aquatic organisms. In this study, it was aimed to determine the effect of zeolite in fish feed and in water, which has the ability to adsorb ammonium, on ammonia removal. In the study, 12 different experimental groups were organized by creating 0, 2, and 10% ratios for fish feed (G1-G3), groups that zeolite only in water (G4, G5), and combinations (zeolite and/or in water/in feed) of 0, 7, and 20 g/L amounts to water (G6-G12). When NH3 and TAN data of G1-G3 were examined, it was determined that although there was no statistical difference, it decreased proportionally with the increase in the amount of zeolite in the feed. The difference between water temperature, dissolved oxygen, pH, NH3 and TAN values in G4 and G5 groups was found to be insignificant. The dissolved oxygen, pH, NH3 and TAN values between the groups (G6-G12) were statistically different. As a result, it was determined that 10% addition of zeolite into the feed decreased the TAN values by 37%, and the addition of 10% into the feed and 20 g/L into the water decreased the TAN values by 45%. When the results are evaluated from another point of view, considering the economy and ease of use, it is concluded that 2% zeolite in feed and/or 7 g/L in water can be recommended for aquatic species with high tolerance to ammonia values.Öğe Zeolitin koi balıklarının (Cyprinus carpio L.,1758) yetiştiriciliğinde kullanımı(Sinop Üniversitesi, 2010) Öz, Meryem; Aral, OrhanBu araştırmada zeolitin, koi balıklarının yetiştiriciliğinde kullanılabilme olanağı incelenmiştir. Çalışma, dört ayrı denemeden oluşturulmuştur.Birinci denemede, yeme %2 ve %10 oranında ilave edilen zeolitin, miktarı ile orantılı olarak günlük ortalama TAN değerlerinin azalması üzerine olumlu yönde etki ettiği belirlenmiştir (P<0.05). Denemede, yeme %10 oranında zeolit ilavesinin pH ve çözünmüş oksijen değerlerinde artmaya neden olduğu saptanmıştır (P<0.05).İkinci denemede, iki farklı oranda yeme ve/veya akvaryum suyuna zeolit ilavesinin, pH ve çözünmüş oksijen değerlerinde artmaya, NH3 ve TAN değerlerinde azalmaya neden olduğu belirlenmiştir (P<0.05).Üçüncü denemede, 2. Grupta en yüksek ağırlık artışı ve en iyi yem değerlendirme oranı belirlenmiştir (P<0.05). Diğer deneme gruplarının büyüme ve yem değerlendirme oranları arasındaki farkın ise önemli olmadığı saptanmıştır (P>0.05). Denemede akvaryum suyuna 7 ve 20 g/l zeolit ilavesinin gruplarda pH, NH3 ve TAN değerlerinde artmaya neden olduğu tespit edilmiştir (P<0.05). Yeme %2 ve %10 oranında zeolit ilavesinin ise NH3 ve TAN değerlerinde azalmaya neden olduğu belirlenmiştir (P<0.05).Dördüncü denemede, deneme grupları arasında, 3. Grupta en yüksek ağırlık artışı belirlenmiştir (P<0.05). Diğer deneme gruplarının büyüme ve yem değerlendirme oranları arasındaki farkın ise önemli olmadığı saptanmıştır (P>0.05). Denemede yeme ve akvaryum suyuna iki farklı oranda zeolit ilavesinin miktarı ile orantılı olarak pH, NH3 ve TAN değerlerinde artmaya neden olduğu belirlenmiştir (P<0.05).Sonuç olarak zeolitin, koi balığının büyüme parametreleri ve su koşulları üzerine olumlu yönde katkı sağladığı belirlenmiştir (P<0.05).
