Stephen Henning wrote:
In article ,
Hal wrote:

What is the difference in using a mix of bulk potassium nitrate,
potassium phosphate, potassium sulfate? Sounds like potassium comes
with everything and I wonder why, and if it works better?

Also consider:

ammonium nitrate
ammonium phosphate
ammonium sulfate

Umm... I was talking about fertilizing water in a pond where there are
live fish. You don't add ammonium to the water.

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