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Water Quality Management For Fish Farms - Agriculture - Nairaland

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Water Quality Management For Fish Farms by Sergioaguero: 7:56pm On Nov 22
Water Quality Management for Fish Farms

Join FISH FARMERS ASSOCIATION WORLDWIDE FACEBOOK GROUP @ https://facebook.com/groups/FFAWorldwide to get more free tips in starting your own fish farm at home and succeed.

Fish live, breathe, feed, grow, repoduce and excrete wastes within water are therefore totally susceptible to changes in water quality. For fish to maintain an optimum level of health, avoid stress or disease then the water quality of the water must be monitored anc controlled 24/7. Fish become stressed when key water quality parameters such as temperature, pH nitrgenous waste, dissolved oxygen and salinity are not kept with specified thresholds.

AMMONIA
Ammonia is the main waste product profuced by fish and is regarded as the second most important water quality parameter after PH and dissolved oxygen in intensive fish farming. Even in relatively small concentrations, ammonia can cause significant stress and damage to fish especially bacteriological infections. In higher concentratons where the nitrogen cycle is not in balance ammonia can wipe out whole fish stocks.

Ammonia occurs in two forms: (1) Total Ammoniacal Nitrgoen (TAN) which is the toxic un-ionised ammonia (NH3) and (2) non-toxic ionised ammonia (NH4). The pH and the temperature of the water will dictate which form ammonia is dominant at the time. When ammonia is expelled it is converted into toxic nitrite (NO2-) by Nitrosomonas bacteria. Nictrobacter on the other hand convert nitrite to non-toxic nitrate (NO3+) which in turn is taken up by plants and algae as a food source. It is therefore important to ensure that nitrite levels are very low if not zero. If NH3 levels exceed 2ppm, fish can die.

RS Hydro provide a range of instruments to measure NH3 including handheld water quality meters with Ion Selective Electrodes (ISEs), UV-based photometers and fluorometers.



DISSOLVED OXYGEN (DO)
Dissolved Oxygen (DO) is considered by most to be the most important water quality parameter with pH in aquaculture. Depending on the size and type of fish farm, DO levels can change very quickly indeed and can therefore endanger the lives of the fish in a matter of minutes or hours. The main problems with maintaining a suitable level of dissolved oxygen in fish farm applications is that oxygen is not very soluble in water and takes a lot of oxygenating to keep these levels; oxygen naturally diffuses to the atmosphere and the demand for oxygen is un-naturally higher in fish farm application than in the natural environment purely due to the stocking density of the fish farm.

Although fish can tolerate a drop in dissolved oxygen below 5-6 mg/L for short periods of time, it will lead to significant stress or indeed death if not increased to healthy levels. The use of handheld dissolved oxygen meters or continuous online dissolved oxygen sensors can help montior and control these situations.

PH
The recommended pH range for fish and vertebrates is between 6.5 and 7.5 as the average blood pH is around 7.4. With water passing through the fish gills and skin they are susceptible to changes in pH. Fish therefore become stressed if pH falls outside the pH6.5 - 7.5 range. pH does vary throughout the day and depends on the oxygen demand in the water and photosynthesis. CO2 is also released overnight hence lowering pH by morning but rises to its peak in the afternoon when CO2 consumption by algae (photosynthesis) is at is peak.

The pH of the water aquatic organisms live in affects the concentrations of dissolved substances, the physiological functioning of the animals, and the other plants and animals in the environment that provide food and oxygen to the ecosystem. Fish have a reduced capacity to carry oxygen if pH levels fall to critical levels but if the pH goes critically high, the portion of ammonia that is toxic also increases.

Our Digital ph Meter can provide the data required to effectively monitor and control pH levels.
Nothing stresses the fish quicker than poor quality water. The maintenance of water quality is critical to the success of your fish farm.

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Water quality management is the Key to success of everything, we do in fish farming.

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Fish will lose their appetite in poor quality water and usually show signs of stress as the conditions deteriorate.

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The situation under investigation could be an early warning sign of an impending critical water quality problem. PH and levels may be low or high, thus depriving the fish of a key ingredient for fast growth and Development.

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�Water that has a pH that is too low or too high can be harmful to fish and other aquatic life. .

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�At low pH, toxic metals such as aluminum can enter the water in greater concentrations, some nitrogen-bearing chemicals become more toxic, and the metabolic processes of fish can become less efficient. .

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�Water with pH below 5 can inhibit reproduction or lead to death, and young fish and other aquatic organisms are especially susceptible. Water with a pH below 6.0 can inhibit growth.

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�At high pH values (such as >9), most ammonium ions are convert

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We have the devices available

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#Price of PH meter N10,000

#Delivery fee in Lagos N1000

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#Delivery fee in Ogun N1500 - N2000

Pay on delivery in these states.

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Other states pay before delivery.

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To order #call 08138570184

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Whatsapp click � https:///2348138570184

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