[Cnidaria] Nitrogen Bubblers

[Monty Graham]

Hello Ryan,

I'm not sure I understand your question. Are you looking to regulate 
dissolved oxygen within the range you indicated? If so, how narrow is 
your window for final oxygen concentration? We used an industrial 
nitrogen tank and regulator and bubbled a reservoir of water to very low 
oxygen and then mixed it with oxygenated water to get the desired 
concentration. One word of caution... watch the pH closely (something 
not often done when using nitrogen to lower oxygen in seawater).

cheers
Monty Graham

Ryan Manzer wrote:
>
> Does anyone know of a good manufacturer of nitrogen bubblers for small 
> volume aquariums?  I'm trying to find an easy adjustable way to reduce 
> the oxygen in my system from 7.5 mg/l to 0.3 mg/l and I would like 
> something a little smaller than a refrigerator.  Hopefully someone out 
> there has dealt with this problem at some point, thanks.
>
> Ryan Manzer
> Aquarist
> Husbandry Dept.
> Monterey Bay Aquarium
> (831) 644-7552
> rmanzer at mbayaq.org
>
> ------------------------------------------------------------------------
>
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-- 
William (Monty) Graham, Ph.D.
Assoc. Professor of Marine Sciences
Dauphin Island Sea Lab & Univ. So. Alabama
101 Bienville Blvd., Dauphin Island, AL 36528
Ph:(251) 861-2272 Fax: (251) 861-7540
mgraham at disl.org