Biofilter
Aeration
Suspended solids
Recirculating aquaculture system
Rainbow trout
Hydraulic retention time
Total suspended solids
Environmental science
Nitrate
Trout
Water quality
Filtration (mathematics)
Environmental engineering
Pulp and paper industry
Aquaculture
Fish farming
Nitrogen
Flushing
Chemistry
Wastewater
Chemical oxygen demand
Fishery
Ecology
Biology
Fish <Actinopterygii>
Statistics
Mathematics
Organic chemistry
Endocrinology
Engineering