How to cure cement concrete pond for catfish farming

 

 How to cure cement concrete pond for catfish farming 

To cure a cement concrete pond for catfish farming, you will need to follow these steps:

Clean the pond thoroughly. 

This will remove any dirt, dust, or debris that could contaminate the water.

Fill the pond with water. 

The water should be clean and free of chlorine.

Allow the pond to sit for 7-10 days. This will give the cement time to cure and harden.

Drain the pond and refill it with water. This will remove any excess cement dust or debris from the pond.

Test the water quality for TDS(Total Dissolved Solids) and pH. Make sure that the water is safe for catfish before stocking the pond.

Here are some additional tips for curing a cement concrete pond for catfish farming:

Use a concrete sealant. 

This will help to protect the concrete from erosion and make it more durable.

Add plants to the pond. Plants will help to oxygenate the water and provide food for the catfish.

Test the water quality regularly. This will help you to identify and address any problems early on.

Once the pond is cured and the water quality is good, you can stock the pond with catfish fingerlings.

Here are some additional tips for stocking a catfish pond:

Stock the pond at a density of 1-2 fingerlings per square foot.

Feed the catfish a high-quality diet.

Monitor the catfish closely for signs of stress or disease.

With proper care and management, your catfish pond can provide you with a healthy harvest. 

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Total Dissolved Solids Meter ( N10,000)

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PH meter Strips  N3500

{(80 Strips in A pack) (Minimum Order Quantity (2)}

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Delivery Fee in Lagos Mainland. ( N3000 - N3500) 

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How TDS affects catfish fries

Total dissolved solids (TDS) is a measure of the total amount of dissolved substances in water. It is expressed in parts per million (ppm). 

TDS can include a variety of substances, such as salts, minerals, and metals.

Catfish fries are particularly sensitive to TDS levels in the water. High TDS levels can cause a number of problems for catfish fries, including:

Reduced growth: High TDS levels can interfere with the catfish fries' ability to absorb nutrients from the water. This can lead to reduced growth and development.

Increased stress: High TDS levels can also cause stress in catfish fries. This can make them more susceptible to disease and infection.

Reduced survival rates: High TDS levels can lead to increased mortality rates in catfish fries and grown out thereby stressing the kidney in excessive work in filtration which leads to kidney failure due of high toxicity of total dissolved solids in water.

It is important to maintain optimal TDS levels in the water when raising catfish fries. The ideal TDS level for catfish fries is between 200 and 300 ppm.

Tips for maintaining optimal TDS levels in the water for catfish fries:

Test the TDS levels in the water regularly. You can purchase a TDS meter from us. Only limited stock available.

If the TDS levels are too high, you can dilute the water with fresh water.

You can also use a reverse osmosis (RO) system to filter the water and remove dissolved solids from your water.

Be careful not to lower the TDS levels too much, as this can also be harmful to catfish fries.

By monitoring and maintaining optimal TDS levels in the water, you can help to ensure that your catfish fries grow and thrive.

Tips on how to manage catfish fries:

1).Maintain good water quality. This is the most important factor in keeping catfish fries healthy and alive. The water should be clean, clear, and free of pollutants. 

The pH should be between 6.5 and 7.5, and the temperature should be between 24 and 29 degrees Celsius.

2). Feed the fries regularly. Newly hatched fries should be fed several times a day, at a rate of 6-10% of their body weight. As they grow older, they can be fed less often.

Feed them a high-quality fry food that is specifically formulated for catfish.

3). Avoid overfeeding. Overfeeding can lead to water quality problems and make the fish susceptible to disease. Only feed the fries as much as they can eat in a few minutes.

4). Remove waste regularly. Catfish fries produce a lot of waste, which can pollute the water. Remove the waste from the tank or pond regularly to keep the water clean.

5). Protect the fries from predators. Catfish fries are small and vulnerable to predators, such as birds, turtles, and other fish. Protect them by covering the tank or pond with a fine mesh.

6). Monitor the fish closely. Keep an eye on the fish for signs of illness or stress. If you notice any problems, take action immediately.

7). Provide them with plenty of oxygen. This can be done by aeration or by circulating the water.

8). Add plants to the tank or pond. The plants will help to improve the water quality and provide the fish with hiding places.

9). Keep the water temperature consistent. Fluctuations in temperature can stress the fish and slow their growth.

10). Provide the fish with a balanced diet. This includes a variety of live (daphna), Atemia, and dry foods.

By following these tips, you can help your catfish fries grow healthy and strong.

Buy our Total Dissolved Solids Meter (N10,000)

Buy pH strips (80 strips in a pack) (N5000)

Buy Both pH and TDS meter N13,500

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(N3000 - N5000) Depends on location.

Delivery Fee to South West (N4000)

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How to calculate the daily dosage of OTC medication applied in feed

How to calculate the daily dosage of OTC medication applied in feed

Suppose that you have stocked 5000 catfish and after 2 weeks mortality starts and you suspect a bacteria infection. The fish are stocked at an average of 10g (0.01kg) a piece and in 2 weeks they were fed 40kg.

The estimated biomass of the fish will be 

5000x 0.01kg+40kgx 1.0(FCR=1)=90kg

The dosage of applying OTC in the feed is 75mg/kg of fish. 

So, the dosage on a daily basis for a period of 7 days is :

90kg x 75mg/kg =6750mg

Or approximately 7g.

You feed the fish 1% of the bodyweight on a daily which is 90kg x 1/100=0.9kg

In summary you apply 7g of OTC per day in 0.9 of starter feed for 5-7days.

Note: Mixing the antibiotic I  the feed should be carried out with gloves. Normally the antibiotic will stick to the oil-coated feed. If the feed is too dry, you can add a little vegetable oil to make the feed stickly for the antibiotic.

How to calculate the dosage of OTC (Oxytetracycline) medication applied in water ) 

A concrete tank(pond) has the dimension of 5m x 2m x 0.8m and you want to treat the fish with OTC (oxytetracycline) 40g/m³. You reduce the water level to 0.4m. How much OTC should you use? 

Solution 

5mx2mx0.4m =4m³ 

4m³x40g/m=160g

The OTC should remain in tank for at least 4 hours, followed by adding fresh water.

How to calculate the dosage of OTC medication based on the percentage of active ingredients? 

The OTC you are buying has an active ingredient of 100g OTC/kg, which means that the medicine has 10% active ingredient. The dosage of 40 g/m³ has to be multiplied by 10=400g/m³

Always try to buy medicine with 100% active ingredient. 

The inactive ingredient will pollute the water.

Reduce the water level to 1ft

 For instance 

If you pond is 

5 meters wild

10meter long 

 And the level of the water is 0.3meter(1ft)

28ml of formaline to 1leter of water

LxBxHx28

5mx10mx0.3mx28ml 

=420ml 

420ml of formalin is to be apply

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