Large-Scale Biofloc Tank Culture of Tilapia in Malawi – a Technical Success Story

Published on: 12/05/2018
Author/s : Ray Kourie / Chief Technical Officer, SustAqua Fish Farms.

Malawi — a Fish Eating Nation Although Malawi is endowed with the ninth largest lake in the world and the third largest and second deepest lake in Africa, overfishing resulted in the collapse of the tilapia fishery around 1990- 1991. Tilapia, known locally as chambo, is the country’s favorite fish and now costs from US$ 4.00-8.00/kg (R55-110/ kg) for whole or live fish. This is a res...

remove_red_eye 913 forum 11 bar_chart Statistics share print
Share :
December 5, 2018

Can you explain to me about water preparation for Bioflok, ingredients, their Quantity in 1000 lt. of water, and other required processes?

Dilip Jha Dilip Jha
December 12, 2018

Thanks a lot for the information. It is better to start with fundamentals of Biofloc technology.

February 18, 2019
More about. Biofloc fish farming
February 18, 2019

I would like to know more about biofloc tetechnology.
How to make floc?
What are the types of fishes to be grown in biofloc?
Can we grow fishes in tarpolin tank?
What is the density of such tanks?
How to maintain ammonia and ph value of water?

February 27, 2019
Tarpolin tank. . 10000lt. .
February 18, 2019
Dear Atul, Dilip and Sujith

I will respond very soon. I'm very tied up chasing a deadline on an important task at the moment. Give me a couple of days.

August 4, 2019
Interested in biofloc
amit malhan amit malhan
August 20, 2019

Hi, please mail me just want to know about biofloc farming and can we done in one acre in open water?

August 25, 2019

What are the procedures to formulate the probiotic in biofloc?

November 17, 2019

Hi all,

I would like to know how to lower ph in biofloc tank during water preparation. My initial ph of water was 8.8 after aeration it's 9.2. what should I use to lower ph which is safely used in aquaculture. Alum is toxic to fish hence have to be used with caution, vinegar I tried once but then slowly my ph goes back to 9.2. Kindly suggest me any organic or organic fertilizer. Carbon source jaggery I can't add in large amount add the volatility. Inducing co2 is not cost effective in India.
Hi Sir,

Can you please let me know how to lower ph from 9.3 to 7.5? Using CO2 Gas is not cost effective. Sodium bicarbonate Lowers and adjust Alkalinity but not effective. Acetic acid lower but slowly gets back to actual ph. alum can lower but toxic to fish. There are cottonseed meal, soybean meal and cracked corn don't know how effective it is. Request your guidance.

Raji Panicker

June 11, 2020
In order to maintain 28 degree temperature in bio floc - mainly in winter - we have to enclose the tanks in packed shade or poly house . It is also said that if I maintain C: N ratio of 15 :1 by adding sugar (Carbon source ) in tank there is no need to add any probiotics -I want to know the facts
Engormix reserves the right to delete and/or modify comments. See more details
Post a comment
Create new discussion :
If this discussion does not cover topics of interest or raises new questions, you can create another discussion.
Consult a professional in private:
If you have a specific problem you can perform a consultation privately to a professional in our community.
Louis Landesman
Louis Landesman
  Petersburg, Virginia, United States
Copyright © 1999-2020 Engormix - All Rights Reserved