Bioflok Ikan Nila Di Air Payau - Analisa Masalah & Cara Sederhana Mengatasinya

Summary

In this video, the host explores the use of bioflok systems in brackish water for tilapia farming in Pantai Labu, North Sumatra. The host guides viewers through the setup of a bioflok pond using brackish water from a borewell, focusing on the benefits and challenges of managing high salinity. The video highlights the importance of probiotics, oxygenation, and the careful management of water quality, as well as the selection of resilient tilapia strains like Larasati. The host also addresses specific issues like aeration and waste removal in bioflok systems, offering practical insights for anyone interested in brackish water aquaculture.

Takeaways

• 😀 The video is about the biofloc aquaculture system using brackish water for tilapia farming in Pantai Labu, North Sumatra.
• 😀 The system being used is a biofloc setup with brackish water, as fresh water is unavailable in the area.
• 😀 The farm uses a deep well to extract brackish water, with a salinity level of 0.5, instead of using natural seawater.
• 😀 Biofloc technology, which includes the use of probiotics and aeration, is applied to the brackish water in a similar manner to freshwater biofloc systems.
• 😀 Bacillus and Lactobacillus bacteria are used as probiotics in the biofloc system to enhance water quality and fish health.
• 😀 Salinity adjustments are made for tilapia fry to prevent shock when moving from freshwater to brackish water.
• 😀 Tilapia Larasati was chosen for its robustness and low mortality rate in the biofloc system, with a survival rate of 99% in the first 15 days.
• 😀 One of the key issues with the setup is the lack of an efficient waste removal system in the biofloc pond, leading to the use of a submerged pump for waste management.
• 😀 Proper aeration and oxygen supply are crucial, as dissolved oxygen in brackish water is lower than in freshwater, requiring more frequent aeration.
• 😀 The video emphasizes that for successful biofloc in brackish water, fish stocking density, waste management, and oxygen supply must be closely monitored and adjusted as the system progresses.

Q & A

What is the main focus of the video?

The video focuses on the use of the biofloc system in brackish water for tilapia farming, specifically in the Pantai Labu area of Deli Serdang, North Sumatra.

Why is brackish water used instead of freshwater for the biofloc system in this video?

Brackish water is used because the location doesn't have access to freshwater. The site is near the estuary where there are no freshwater resources available, so brackish water is the only option.

How is the biofloc system implemented in brackish water compared to freshwater?

The biofloc system in brackish water is similar to the one used in freshwater, using probiotics, oxygen from aerators, and bacteria such as Bacillus and Lactobacillus to form biofloc, but brackish water does not require the addition of salt as the salinity is already high.

What role does molasses play in the biofloc system?

Molasses is added as a carbon source to support the growth of the probiotics (bacteria) in the biofloc system, helping in the formation and maintenance of the biofloc particles.

How are the tilapia larvae acclimated to the brackish water in the biofloc system?

The tilapia larvae are acclimated by gradually mixing the brackish water in the bag with the water in the biofloc tank to equalize the salinity before releasing the larvae into the system.

What were the initial results of the tilapia farming in the biofloc system?

In the first two weeks, there were no significant deaths, and the survival rate (SR) was about 99%. The tilapia grew well, and the biofloc system appeared to be functioning properly.

What challenges were encountered by the farmer in the third week of the biofloc system implementation?

The main challenge was the absence of a proper waste disposal system in the tank. The farmer had to use a submersible pump to remove waste, which was inefficient and didn't fully eliminate the waste at the bottom of the tank.

Why can't the biofloc tank be equipped with a drainage system?

The biofloc tank uses a thick tarpaulin that is typically used in vaname shrimp farming. If a drainage pipe is installed, it would cause leakage, so the farmer chose not to install one.

What is the importance of proper aeration in the biofloc system, especially in brackish water?

Proper aeration is critical because oxygen levels in brackish water are lower than in freshwater. The biofloc system requires sufficient dissolved oxygen for the bacteria to thrive and for the tilapia to survive, thus more aeration is needed compared to freshwater biofloc systems.

What was the growth rate of tilapia in the biofloc system after three weeks?

After three weeks, the tilapia showed significant growth, with their size nearly doubling compared to their size in freshwater, which is typical of tilapia raised in brackish water.