Kualitas air tambak udang

Monitoring the water quality for shrimp farming

Water quality is one of the key factors that determines the success of shrimp farming. It’s mandatory for farmers to monitor water quality conditions and this becomes the main concern during the cultivation process. Monitoring of water quality on shrimp farms should be done by anyone on a routine basis.

Water quality data is an important piece of information. Its accuracy and reliability help the farmer make a decision (read: Understanding your farm condition with data). A stable water quality condition makes the shrimp healthier, increases growth, makes production more efficient, and improves shrimp quality.

When there’s a problem in cultivation, water quality information and data are used to analyze the cultivation journey and process. For instance, water transparency might indicate that plankton are not growing, or there’s a decrease in shrimp appetite. Those phenomenons are answered if the farmer knows the history of the water quality on his farm.

So, what are the standards for decent water quality for shrimp farming? How can we determine if the water quality is good or bad?

Keep the ideal water quality condition

It’s a common practice for shrimp farmers to measure the water quality. Jala comes as a shrimp farming assistant to help shrimp farmers visualize water quality conditions with a better graphical interface. With this method, the farmer can understand water quality trends from time to time better, perform an analysis and make a decision to take better action for their shrimp farm.

Every living creature has its own preference for the ecosystem in which they live, grow, and breed. This is no exception for the pacific white shrimp (Litopenaeus vannamei). During the cultivation process, the farmer should know the ideal environmental conditions for their shrimp. Shrimp live in the water, so water quality is an important factor. 

Cited from several sources, we summarize the ideal water quality conditions for shrimp growth in cultivation or farm that measured daily. The ideal temperature is around 26-32°C; salinity is 15-30 ppt; pH is 7,5-8,5; ideal DO is more than 4 ppm; and pond transparency is 30-50 cm.

The high or low quality of each parameter is part of a natural phenomenon. But this trend should be tracked and monitored to make sure it’s still within an ideal range. For instance, in the Jala web app, the farmer could see whether the water quality parameter is still in the ideal range by looking at the water quality chart. As shown in the picture below, if the value of the water quality parameter is still ideal, it will be placed on the green area. If the water quality is outside the ideal range, it will be placed in the red area.

water quality Jala app

Stability is important

After we understand the ideal water quality for shrimp farming. There’s another important thing that we need to consider, which is how to maintain water quality and stability. Stability means keeping a value or condition within a specific time range. Each water quality parameter has a specific range, and the time range depends on the fluctuation of each parameter. 

There’s a parameter that has a time range from daily to weekly. temperature, dissolved oxygen (DO), and pH can change within hours. Salinity, alkalinity, the number of bacteria, and the total amount of plankton change longer. Can vary from daily to weekly. The stability happens if there are no abrupt changes in water quality during that time range.

The low stability may affect shrimp appetite, but can also cause shrimp mortality. The unstable water quality stresses the shrimp. This will slow their growth and make them more susceptible to shrimp disease. Mortality is the lasting effect if the shrimp cannot adapt to the changes in water quality.

water quality pH stability

The picture above shows the pH trend over the past several days. The chart trend on the green area is relatively stable with daily fluctuations below 0.5 points. The trend on the chart in the red area is not stable because the daily difference reaches 0.5 points and is outside the ideal range. pH is known as the complex water quality parameter. The fluctuation should not exceed 0.5 points as the causal factor is different. The impact of this unstable condition should be calculated for shrimp health and growth. The other water parameters have a different daily fluctuation standard.

But also make sure you don’t push water quality to the ideal range. Sometimes the shrimp farmer will take action by applying a water quality treatment product using some of the chemical ingredients. But this action can make the system inside the farm much worse. If the water parameter has reached a stable level even though it may be outside of the ideal range, it’s better to keep it because the shrimp will adapt to the environmental conditions.

Usually, the shrimp farmer has experience in setting the ideal range for their water quality. There’s a factor of location that makes each farm have different water quality characteristics. Stability is becoming the next standard in water quality management. 

The farmers who regularly measure the water quality and record those data now can record their water quality information digitally using Jala shrimp farm management software. By recording or inputting your data to the Jala app, your data will visualize in a chart like a picture above and you can get a better picture of how good or bad your water quality is.

You can also monitor the farm conditions from a distance. Make sure everything is well within the cultivation process without having to be present on the farm. Are you ready? Let’s start developing better farm management with Jala!

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