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Name: Henry Z.
Status: educator
Age: 40s
Location: N/A
Country: N/A
Date: Saturday, November 16, 2002


Question:
How do I measure the amount of dissolved oxygen in a feshwater aquarium?



Replies:
This depends upon many factors: 1. How much do you want to spend? 2. Do you want a continuous determination or just a "spot" determination, say daily or weekly? Do you want an instrumental method, or do you want a "wet" chemical method?

An aquarium supply store may well have "field test" kits available for periodic monitoring. If not, "field kits are available. You can start with Hach Inc., but you can also find other vendors by doing a web search (use www.google.com) and the search terms "dissolved oxygen water" or "dissolved oxygen water test kit" or similar terms. Pre-packaged kits are a big advantage over doing the determination "from scratch". You can find an overview of the subject at:

http://www.ecy.wa.gov/programs/wq/plants/management/joysmanual/4oxygen.html

Vince Calder


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