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Science Behind Biofloc Technology


We need to understand little bit of science behind Biofloc system in order to understand it better and to avoid few common mistakes in production (ie ammonia). Don’t worry if you don’t get every think, you will get the general idea.
Biofloc technology focus on efficient use of nutrient input with limited or zero water exchange.
The main principle of BFT is to recycle nutrient by maintaining a high carbon/nitrogen (C/N) ratio in the water in order to stimulate heterotrophic bacterial growth that converts ammonia into microbial biomass (Avnimelech 1999).
The microbial biomass will further aggregate with other microorganisms and particles suspended in the water forming what has been called “biofloc”,
which eventually can be consumed in situ by the cultured animals or harvested and processed as a feed ingredient (Avnimelech 1999; Avnimelech 2007; Crab et al. 2007; De Schryver et al. 2008; Kuhn et al. 2008; Kuhn et al. 2009; Kuhn et al. 2010).
With this principle, Biofloc technology has been applied both at commercial scale for various aquaculture species such as tilapia (Avnimelech 2007; Azim & Little 2008; Crab et al. 2009), shrimp (Burford et al. 2004; Hari et al. 2004; Taw 2010), sturgeon and snook (Serfling 2006).




Biofloc In Indian jugaad term
Storage of water in the tank without exchange so that it grow Bactria which shrimps and fish can eat to gain weight



Indian style Biofloc setup




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