Belajar Bioflok Ikan Nila Kolam Beton Persegi - Video Series 02 - Cara Sederhana Versi Bang Gullo

Summary

This video provides a detailed guide on managing a biofloc system in a square concrete pond for tilapia cultivation. The host walks through the second week of maintenance, covering essential steps such as adding new water, using probiotics, adding molasses as a carbon source, and controlling pond water pH. Emphasizing a learning-by-doing approach, the video offers practical insights on managing water quality, promoting biofloc formation, and ensuring fish health in a biofloc pond. The tutorial also addresses common concerns about using lactobacillus bacteria in biofloc systems and provides tips for beginners looking to replicate the process.

Takeaways

• 😀 The video provides a detailed step-by-step guide for setting up and maintaining a concrete pond using biofloc technology for tilapia cultivation.
• 😀 The pond setup follows a 'learning by doing' approach, aiming to educate viewers from the initial stages to harvest.
• 😀 The stocking density in the concrete pond is 150 fish per cubic meter, similar to the round biofloc pond setup.
• 😀 New water is added to the pond to reach the maximum water level, which is 60 cm for this pond, with water sourced from a drilled well or PDAM.
• 😀 Probiotics, such as Aquaenzym and Bacillus IA, are added to the pond to help establish the biofloc environment, with a dosage of 10 grams per cubic meter.
• 😀 Probiotics are spread evenly over the pond’s oxygen bubbles to ensure proper mixing, avoiding the fish from consuming them.
• 😀 Carbon sources like molasses (100 ml per cubic meter) are added to the pond to help support the growth of beneficial bacteria in the biofloc system.
• 😀 If molasses is not available, brown sugar or granulated sugar can be used as a substitute, with reduced quantities of 50 ml per cubic meter.
• 😀 Lactobacillus bacteria (e.g., EM4 or Yakult) are used in the biofloc system to aid floc formation and maintain water quality.
• 😀 The pH of the pond water is monitored and maintained between 6-8, which is considered ideal for biofloc development and tilapia health.
• 😀 A simple method to check biofloc formation involves taking a water sample and observing the settling of particles; a more accurate test can be done in a lab using Imhoff cones.

Q & A

What is the focus of this video series?

The video series focuses on tilapia cultivation using a biofloc system in concrete ponds, following the learning-by-doing approach. It covers the entire process, from setting up the pond to harvest.

Why is the biofloc method used for tilapia cultivation?

The biofloc method is used because it helps in maintaining water quality by creating beneficial bacteria that break down organic waste. It also helps to increase the stocking density of fish in the pond.

What steps were taken in the second week of pond maintenance?

In the second week, the pond's water level was maximized, probiotics were added, and molasses (a carbon source) was introduced to stimulate the growth of beneficial microorganisms in the biofloc system.

What is the importance of adding probiotics to the pond?

Probiotics help in the development of biofloc by promoting the growth of beneficial bacteria, which helps in breaking down organic matter and maintaining a healthy pond environment for the fish.

What carbon sources can be used in the biofloc system?

Molasses is commonly used as a carbon source in the biofloc system. Other options include brown sugar, granulated sugar, or even Yakult as a source of lactobacillus.

What is the recommended dosage of probiotics in this system?

The recommended dosage for probiotics is approximately 10 grams per cubic meter (M3) of water. In the video, 30 grams of probiotics are added to a pond with a volume of 3 M3.

Why is it necessary to let the probiotics sit for 15 minutes before adding them to the pond?

Letting the probiotics sit for 15 minutes allows the solution to cool to a suitable temperature before being added to the pond, ensuring that the bacteria remain active and effective.

How is the pH of the pond water checked in the biofloc system?

The pH of the pond water is checked by taking a sample and observing the color of the water after a few days. Ideally, the pH should be between 6 and 8 for optimal biofloc formation.

What is the role of molasses in the biofloc system?

Molasses serves as a carbon source that feeds the beneficial bacteria in the biofloc system, promoting the formation of biofloc particles that help in waste removal and improve water quality.

What other types of bacteria can be used in the biofloc system besides lactobacillus?

Other types of bacteria, such as bacillus, can be used in the biofloc system. The video also mentions using aquaenzymes and other probiotic products to improve water quality.