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B-1001: The Nitrogen Cycle & Biofiltration

B-1001: The Nitrogen Cycle & Biofiltration

Learn about how biofilters work to remove toxic nitrogenous waste produced in closed aquarium and aquaculture systems!

Presenter: Dr Rob Jones BVSc(Hons), MACVSc(Aq), MAqua – The Aquarium Vet

Date: January 20, 2014 Time:

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Duration: 1.0 hour

CEPD Credits: 1.5 hours

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More about this event

In this webinar we will discusses the clinical signs and pathophysiology of one of the most common causes for the death of fish – ammonia toxicity and to a lesser extent nitrite toxicity. Understanding the nitrogen cycle is essential for any type of fish keeping.

Speaker: Dr Rob Jones BVSc(Hons), MACVSc(Aq), MAqua – The Aquarium Vet
1.We will look at biofilters and the steps in the conversion of ammonia to nitrite and then to nitrate, as well as the toxicity of the various stages in the cycle. 
2. That biofiltration is one of the most critical components of any closed system. 
3.What is a biofilter and how to establish and successfully maintain one will be discussed, along with conditions that may affect or destroy biofilters.
4.An examination of the process of denitrification will complete the webinar.


Stephen Reichley, DVM, PhD, CertAqV
WAVMA Secretary

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