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How to Test and Control the PH level in Fish Tank

Importance of PH in Fish Farming

The pH value of my fishpond is 5.5, One or two fishes died. What should I do to bring the pH value of this Fish pond to 7? Another friend has to bring the pH value of his pond from 9 to 7. Everyone knows that for fish farming  the pH of the water in pond should be maintained, even if it’s a small or big pond. But such pH variations often make fish farmers skeptical. This video is done as an answer to the doubts of a lot of fish farmers like this. In this video we will see How to Test and Control the PH level in Fish Tank in a better way.

Welcome to another video of Onyx Aqua farm. If you like the video, don’t forget to subscribe to the channel and share it with others. Your doubts and comments can be commented below. this video will help to understand How to Test and Control the PH level in Fish Tank.

Why pH Value is Important in Fish Farming?

The pH value of the water in the fish pond should be carefully monitored by each farmer on a regular basis. pH is the level of acidity or alkalinity in water. This is a factor that affects the health of the fishes growing in the Fish pond. The pH scale ranges from 0 to 14. Numbers below seven indicate high acidity. Similarly numbers above seven indicate high alkalinity. Similarly, the number seven indicates a neutral state.

The pH of the water in a fish pond should be maintained between seven and eight. If the pH value is not at the optimum level it will affect the growth and survival of the fish. However, small changes in pH value may not have any immediate effect on the fishes. For example, assuming that the pH value drops to 6.5 or above 8.5, nothing is likely to happen to the fish immediately. However, regular pH testing should be done to make sure that there are no major changes in pH levels.

PH Scale Vector

The pH of the pool water naturally decreases and rises throughout the day and night due to changes in the amount of carbon dioxide caused by the process of photosynthesis. In the absence of sunlight, since photosynthesis doesn’t take occurs the pH of the water decreases at night. Similarly, the pH of the water rises in the afternoon after photosynthesis for a certain period in daytime. Always consider these daily natural fluctuations in the water before attempting to adjust the pH.

How to Test PH level in Fish Tank?

A pH meter or pH solution can be used to test the pH of the water in the fishpond. We use the pH solution of a company called Nice in our farm. How to test for pH will be based on the instructions provided by the company whose pH solution is used. You can watch the video by clicking here to learn how to test the pH of water.

If you intend to test the water in a large natural pond, you will need to collect samples from different parts of the pond for the test. Or if it is a small pond, just take some water from it.

API Fresh Water Master Test Kit

If the pH value is higher or lower than normal at the time of water testing, the fish pond can be filled with fresh water by removing about 20% of the waste from the bottom. After changing the water in this way, the pH of the water should be tested again to confirm the value.

How to Control the PH level in Fish Tank?

Now let’s see what can be done if the pH value of the water is below seven or should be raised to seven.

  1. Calcium oxide

Calcium oxide,(shells) is widely used to increase the pH of water. This is something that is widely seen in our country. It is available for purchase at fertilizer shops.

Take a bucket of water, mix it well and let it soak for a while. Only well-drained water can be taken and poured into the fish pond. Once it is well mixed in the pond the pH value of the water can be tested again. The sudden change in pH of the water can adversely affect the fish. Therefore it is necessary to increase the pH value of the fish pond, by adding only very small amount timely.

Calcium Oxide

Calcium Oxide

  1. Dolomite or calcium magnesium carbonate.

When pH decreases, dolomite reacts with acid in acidic condition to form carbon dioxide. This so-called dolomite is usually available in fertilizer shops. It is insoluble in water. Take a certain amount of it and mix it with a little water. Then pour the drained water into the pool leaving the solid parts and evidence that lie beneath it. Then pour water in it and mix again and pour the drained water back into the pool. After that the solid parts below can be omitted. If dolomite is used to increase the pH, it will not go to an alkaline level. This acts as a pH buffer.

Dolomite for buffer the PH

Now, if the pH value is high, let us see how to reduce it. If the pH of the water is high, it means that the alkalinity of the water is high. This can be reduced by using a variety of acids.

  1. Vinegar or surka.

If vinegar is used in a pond growing fish, use only a very small amount. Take water from the pond in a bucket and add a certain amount of vinegar to it. Mix well and spray all over the pool such that it reaches the pond evenly. The pH can be checked again after a while. In this way the pH value of the fish pond should be reduced very slowly.

Vinegar for reduce PH of fish pond

2. Alum or Aluminum sulfate

Alum or aluminum sulfate can be used to reduce the high pH value very quickly. It is a safe and relatively inexpensive chemical. It can be bought from any native medical shops in our place. It reacts with water to form a certain acid. The pH value can be reduced by applying 10 g of alum per 1000 liters of water. But if it is a pond cultivating fish, it should only be used in a very dilute manner. Similarly, the pH value is likely to fall even below the optimum level of seven very quickly from the use of alum. It can be mixed with water and poured into various parts of the pond. Similarly, the alum can be cut into small pieces and tied in a piece of cloth and hung at different corners of the fishpond.

Aluminium suplhate for control ph

The pH of the water can be kept unchanged to some extent by reducing the amount of direct sunlight entering the pond. Fish farmers should try to make it a habit to test the pH of the water in the pond. Fish are more likely to die due to changes in the pH of the water. You can comment your doubts and comments about aquaculture below. If you like this video, don’t forget to subscribe to the channel and share the video. This video you can follow How to Test and Control the PH level in Fish Tank. See you again with another video Thanks.




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Importance of Alkalinity in Aquaculture

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