In article ,
Nikki Casali wrote:
Can anyone recommend an online website where I can obtain LaMotte's
Potassium Test Kit #3138? Forget the UK. I'm interested in outlets in
the US so that my brother in SF can possibly obtain it.

ebay?

frankly it's easier to ass potassium nitrate and test for nitrates;
if you have any, you have potassium. in a tank with regualr water changes
and enough dosing of kno3 to keep plants green you'll neevr run out of
potassium

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