{"id":14732,"date":"2019-01-29T21:31:22","date_gmt":"2019-01-29T19:31:22","guid":{"rendered":"http:\/\/fishconsult.org\/?p=14732"},"modified":"2020-02-07T21:55:50","modified_gmt":"2020-02-07T19:55:50","slug":"control-of-phytoplankton-bloom-using-chlorine-dioxide","status":"publish","type":"post","link":"https:\/\/fishconsult.org\/?p=14732","title":{"rendered":"Control of phytoplankton bloom using chlorine dioxide"},"content":{"rendered":"\n

Photo credit: <\/strong>Marx Perfecto C. Garcia (Philippines) Description:<\/strong> Marx Perfecto C. Garcia and Abdel Rahman El Gamal (Founder of the website) <\/p>\n\n\n\n

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As established, the turbidity caused by eutrophication and\nphytoplankton bloom in fish pond is a dangerous incidence that may ultimately\ncause stress and even kill of stocked fish. Means for the control of the\nplankton bloom varied through management practices or use of chemicals. The\ninserted picture shows the application of chlorine dioxide in a fish pond in\nChina. In this particular application, an amount of 500-g of chlorine dioxide\npowder is mixed in the boat container with about 50 to 80 L of water. The\nsolution is broadcasted throughout the pond areas using a boat. The solution is\nsufficient for a pond area of about 3,000 to 4,000 m2<\/sup>.<\/p>\n\n\n\n

The use of chlorine dioxide for such purpose is based on the\nability of the compound to readily dissolve in water and so its effectiveness\nin the control of algae. In addition, the safety of using chlorine dioxide has\nbeen endorsed by international organizations related to food and environmental\nsafety including the Environmental Protection Agency (EPA) and other organizations\nas well. Interestingly, the US Food and Drug Administration (FDA) permitted the\nuse of chlorine dioxide as a food additive for human consumption.<\/p>\n\n\n\n

While\nthe primary use of the chlorine dioxide is for bleaching of wood pulp, it is\nalso used for the bleaching of cereal flours and for the disinfection\nof municipal drinking water. The product has been registered for the use as\na disinfectant and sanitiser in animal farms, food-processing and storage\nplants. Its use as an antimicrobial agent has been adapted in the\nwater of poultry processing as well as in water used to wash fruits and\nvegetables, and for rinsing food processing equipment.\n\nA unique application of chlorine dioxide occurred in 2001, when\nused to decontaminate a number of public buildings following the release of\nanthrax spores in the United States.\n\n\n\n<\/p>\n\n\n\n

Precaution:<\/strong> A\nrule of thumb if any algicide is applied to a fish pond in the existence of fish, aeration should be performed to pond water <\/em>to prevent the risk of fish suffocation due to the\nlowering of dissolved oxygen caused by algae kill. As expected, the risk of\noxygen decline will be influenced by the dense of plankton bloom and the level\nof algal kill. In situations, when the effective aeration is not possible, it\nis advised to find out other means for controlling dense algae rather than\nusing chemical algaecide<\/em>. On the other hand, in situations where\nalgaecides is applied prior to fish stocking, all what is needed is to monitor the\nlevel of dissolved oxygen and fish stocking takes place once oxygen is back to\nnormal after algicide treatment.\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"

Photo credit: Marx Perfecto C. Garcia (Philippines) Description: Marx Perfecto C. Garcia and Abdel Rahman El Gamal (Founder of the website) As established, the turbidity caused by eutrophication and phytoplankton bloom in fish pond is a dangerous incidence that may ultimately cause stress and even kill of stocked fish. Means for the control of the … <\/p>\n

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