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Ken wrote: "I've got a couple of questions for all of the experts.
1. Is it possible to test for Potassium levels ? I've looked but
not found a test kit.
2. What are the dosing recomendations for the following.
3. What are the effects of overdosing an aquarium if a dosing
mistake is made."
Q1. Not that I know of-although there we've had a comment that LaMotte
may make a potassium test kit. I borrowed an expensive electronic
potassium test kit from an agronomist friend for a month or so-so I've
had the luxury of getting a little base line information.
Q2. dr. dave (Huebert) recommends 5 - 10 ppm. My calcs for dosing
K2SO4 are at home so I can't give you the numbers. I play in ¼ tsp.
units in my tanks without difficulty.
Q3. I have the impression that one can overdose potassium at least
slightly without adverse reactions. I'm reasonably certain I've been in
the 20 ppm range for at least a few weeks and didn't notice any
Good luck. Steve Dixon