News features and technical articles about the evolution of aquaculture, one of the world’s fastest growing industries.



TAN, other water quality factors affect nitrification rates in biofilters

An important criterion when studying biofilters is the conversion rate of total ammonia nitrogen (TAN) to nitrate-nitrogen in production water. Although nitrification rates have been based on media surface areas, they do not always reflect the actual nitrification achieved. Volumetric 


Integrated fish-seaweed culture systems

The use of integrated mariculture systems incorporating seaweed biofilters addresses the impact of discharges, promoting more sustainable production. 


Biofilters: Choosing your substrate

Heterotrophic and autotrophic bacterial communities supported within a biofilter naturally process organic wastes and provide biologically stable water.  


Nitrification rates in fluidized-bed filters

Study evaluates nitrification rates of three fluidized-bed filters, finding no significant changes in fluidization level as biofilm accumulated or was sheared off.