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Re: [APD] Re: Ammo Lock and Ammonia Tests

For those interested in the ratio of ammonia to ammonium,
or vice versa, as it relates to pH, the following info
comes from _The Aquatic Gardener_, which quoted the
material from Roger Miller, who took the info from the
source mention below:

Lifting a few numbers from Spotte (1970 ed., p 104), the
percentage [of  ammonia & ammonium that occurs] as ammonia
at 20 degrees C is:

 pH            %ammonia
7.0              0.5
7.5              1.5
8.0              4.7
8.5             13.7
9.0             35.8
9.5             62.1

Good luck, good fun,
Scott H.

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