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Re: [APD] pearling after water changes Vol 2

Stuart Halliday wrote:
> I suppose you could collect the pearls in a test tube and then stick a 
> lighted match in it to see it is Oxygen?

Just a related note: My recollection is that organics like wood will not 
burn below about 16% O2.

"He who throws dirt is sure to lose ground."

Jerry Baker
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Aquatic-Plants at actwin_com