Biofilters use nitrifying bacteria to convert toxic nitrogen compounds to non-toxic forms.
Rotating biological contactors provide large surface areas for nitrifying bacteria
The addition of base, potassium or calcium hydroxide, counteract the acids produced in the nitrification process.
| Class lecture | Field work |
| Nitrification in aquaculture systems | Monitor pH in systems |
| System component options | Adjust pH with base additions |
| Water quality considerations | Construction of an RBC |
| Base addition requirements |
