Toxicity in aquariums

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Timestamps:

00:00 Start

03:42 Intro

04:53 Acute vs chronic toxicity   

06:12 Measuring toxicity  

08:40 Freshwater vs Saltwater

12:05 Lisa Steiner Work Loss of Ammonia oxidase

15:56 Why do you experience a stall during cycling?

21:16 When to test 

25:41 Nitrate is toxic

27:00 Chronic nitrate

38:09 Phosphate and the redfield ratio