fish tank Articles

  • Fishing for a Solution

    As writer Rowan Jacobsen explores in our recent feature “Has Meat Met Its Match?,” animal agriculture’s hefty environmental footprint is creating interest in exploring ways to meet humans’ growing appetite for animal protein that extend beyond beef, chicken and pork. In some places, that ...


    By Ensia

  • The Use of Ozone as a Disinfectant in Fish Hatcheries and Fish Farms

    The ever increasing load on the environment calls for more intensive measures to maintain the natural equilibrium. This is especially the case when it comes to the different life forms in rivers and lakes. In order to maintain indigenous fish populations it has become necessary in many countries to introduce stocking programs for coarse fish in addition to the ever increasing activities involving ...

  • Case study: fish processing plant wastewater treatment

    Abstract This presentation describes the full scale installation of a wastewater treatment system at the Ocean Gold Seafood ("OCS") plant in Westport, Washington, USA. Local Government requires that fish processors remove total suspended solids (TSS), fats, oil and grease (FOGs) and colloidal materials almost completely in order to allow for efficient disinfection. The OCS plant had only ...

  • Primozone increased production at Swiss fish farm

    The Swiss fish farm Valperca experienced problems with water quality in a recirculation system and could not produce fish at designed capacity. With the Primozone Ozone Water Treatment Solution the water quality improved within a couple of days. Valperca is a Swiss fish farming plant situated in the beautiful Valais valley. They produce perch, which is considered a delicacy in Switzerland. The ...


    By Primozone Production AB

  • Development of Indonesian Fish Farming & Aquaculture Production

    Part 1.Fish Farms Market Overview in Indonesia Part 2.Reasons Why Fishery Industry Develops Fast in Indonesia Part 3.Fish Farm Types in Indonesian Part 4.Sustainable Development of the Fishery in Indonesia Fish Farms Market Overview in Indonesia Fish farming is the ...

  • State Fish Hatcheries and Invasive Species Don’t Mix

    INTRODUCTION The Vermont Fish and Wildlife Department is responsible for the protection and management of the state’s fish populations. Cultured fish are stocked in natural and manmade areas that are excellent for growth and survival but have little or no spawning habitat. Other stocking areas include natural water bodies where spawning and nursery habitats have been destroyed or isolated from ...

  • For lively fish in the water Oil-free generation of oxygen at fish farm - Case Study

    For 30 years, trout have been cultivated at the Winkelmann farm in Wietzendorf (Lower Saxony), southeast of the city of Soltau. What started out as a hobby ultimately became a business. Since then, the main goal has been the preparation of fish eggs, caviar (roe). The female trout are brought up in concrete semi-circulating basins and slaughtered after 26 to 29 months as salmon trout. The annual ...

  • Travelling the world to install vacuum pumps in the fishing industry - Case Study

    Travelling the world to install vacuum pumps in the fishing industry A senior supervisor at Havyard/MMC, Asbjørn travels as much as 200 days a year. It is a requirement from nearly all ship owners and shipyards that only pumps from Samson Pumps in Denmark be installed in their ships Meet Asbjørn Tråseth Aged 41, married and father of two children – a ...


    By Samson Pumps A/S

  • Asahi/America Application Story – Aquariums

    No one visits an aquarium to see fish swimming around in a cloudy tank. That is why a large Northwest Aquarium took great pains in choosing a valve to use in their renovation and expansion project that called for the addition of a 120,000 gallon sea life viewing exhibit and large wave ...


    By Asahi/America, Inc.

  • Model of an aquaponic system for minimised water, energy and nitrogen requirements

    Water and nutrient savings can be established by coupling water streams between interacting processes. Wastewater from production processes contains nutrients like nitrogen (N), which can and should be recycled in order to meet future regulatory discharge demands. Optimisation of interacting water systems is a complex task. An effective way of understanding, analysing and optimising such ...


    By IWA Publishing

  • Reliable pumps are the be-all and end-all - Case Study

    "The introduction of the vacuum system is the biggest positive change that has taken place in the fishing industry in all the years I have been a fisherman," says Roi Magnussen, chief engineer and co-owner of "H265 Asbjørn", which is one of Denmark's largest and most modern fishing vessels When "H265 Asbjørn" was built in 2008 – then under the name of "Gitte Henning" – ...


    By Samson Pumps A/S

  • Aquaculture case study

    Customer: USDA-ARS Catfish Genetics Research Unit,USA Casey C. Grimm from the Southern Regional Research Centre New Orleans, USA. This research was executed by Ph.D. Paul V. Zimba from the USDA-ARS Catfish Genetics Research Unit, USA and Casey C. Grimm from the Southern Regional Research Centre New Orleans, USA, utilizing the LG Sonic ultrasound technology in channel catfish production. An ...


    By LG Sonic

  • Performance of an in-situ rotating biological contactor in a recirculating aquaculture system

    The start-up and activation of a nitrifying rotating biological contactor (RBC) and its performance inside a culture tank of rainbow trout were studied. First, in a lab-scale operation, the system was fed with a synthetic medium containing a high ammonia concentration (567 mg NH4+-N L−1) and operated at a high hydraulic retention time (HRT) (6.5 days) to minimize the wash-out of the biomass and ...


    By IWA Publishing

  • Evaluation of potential mechanisms of atrazine‐induced reproductive impairment in fathead minnow (Pimephales promelas) and Japanese medaka (Oryzias latipes)

    Atrazine has been implicated in reproductive dysfunction of exposed organisms, and previous studies documented decreased egg production in Japanese medaka (Oryzias latipes) and fathead minnows (Pimephales promelas) during 30 to 38 dexposures to 0.5, 5, and 50 µg/L atrazine. Here we sought to evaluate possible mechanisms underlying the reduction in egg production. Gene expression in ...


    By John Wiley & Sons, Ltd.

  • Potential risks to freshwater aquatic organisms following a silvicultural application of herbicides in Oregon's Coast Range

    Glyphosate, aminomethylphosphonic acid (AMPA), imazapyr, sulfometuron methyl (SMM), and metsulfuron methyl (MSM) were measured in streamwater collected during and after a routine application of herbicides to a forestry site in Oregon's Coast Range. Samples were collected at three stations: HIGH at the fish/no‐fish interface in the middle of the harvest/spray unit; MID at the bottom of the ...


    By John Wiley & Sons, Ltd.

  • MonoScan for stock management of animal feed case study

    MonoScan provides a reliable and accurate continuous level indication of animal feed. MonoScan is deployed in a very large regional large feed mill. This feed mill supplies feed for poultry, turkeys, ruminants, fish, rabbits, and pigeons. The plant has a modern premix department that produces vitamin and trace mineral premixes for customers by demand. The problems In ...

  • Composting and local food merge st urban garden

    Growing Power (GP), a nonprofit urban garden and training center in Milwaukee, Wisconsin, provides affordable produce to neighborhoods without access to fresh food, and processes a variety of organic wastes through composting and anaerobic digestion. Located on a two-acre lot on Milwaukee's north side, the six greenhouses and several hoop houses include raised beds for herbs and greens, ...


    By BioCycle Magazine

  • Effects of the herbicide imazapyr on juvenile Oregon spotted frogs

    Conflict between native amphibians and aquatic weed management in the Pacific Northwest is rarely recognized because most native stillwater‐breeding amphibian species move upland during summer, when herbicide application to control weeds in aquatic habitats typically occurs. However, aquatic weed management may pose a risk for aquatic species present in wetlands through the summer, such as the ...


    By John Wiley & Sons, Ltd.

  • Stock management of animal feed

    MonoScan for Stock Management of Animal Feed MonoScan provides a reliable and accurate continuous level indication of animal feed in Kfar Vitkin, Israel. This is one of the largest feed mills in the country. Kfar Vitkin feed mill supplies feed for poultry, turkeys, ruminants, fish, rabbits, and pigeons. The plant has a modern premix department that produces vitamin ...

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