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INTRODUCTION TO BIOFLOC SYSTEM

Biofloc technology is a new revolution in aquaculture and is a beneficial approach to sustain our ecosystem. Due to climate change, the new technology helps to control the pollution thus give a good business sight. Biofloc technology has a different concept from Recirculating aquaculture system (RAS) methods. In RAS, a biofilter is used to remove the compounds and reduce ammonia toxicity.



Figure 1. The indoor biofloc system here in RAS Aquaculture


The usage of formulated feed as the source of nutrients and protein has been applying worldwide. Uneaten or leftover feed are some of the challenges faced by the farm operator which are costly. Biofloc technology is well known for its ability to reduce feed conversion ratio (FCR) at 1 to 1.5. The amount of feed can be reduce because of increasing culture feasibility or food source from the biofloc. Therefore, the technology helps to improve the understanding of feeding rate or intake rate which is different according to body weight of shrimps to avoid overfeeding. Here in RAS Aquaculture, the FCR can be reduced around 1.3 to 1.4 at some time between the culture period. FCR is the amount of feed we used to get 1 kilogram of body weight and usually feed can be up to 60% of the operational cost. Thus, reducing FCR is a good indicator for a feeding strategy to reduce cost operation.



In aquaculture, maintenance of water quality is a crucial aspect to focus on. Biofloc technology helps to control water quality which is essential for the success of the growing cycles. Daily monitoring of water parameters will ensure the quality of biofloc is at its optimum. Water quality parameter such as ammonia which is