By law, fertilizers are labeled for NPK. Potassium is the "K" part. Plants
need all three. As I recall, fish food provides a lot of the phosporus (the
"P"). The Nitrogen part is provided by fish waste of ammonia converted to
nitrate. A good introduction to all this stuff can be found at
http://www.csd.net/~cgadd/aqua/art_p...izer_intro.htm

Bob
"Dave M. Picklyk" wrote in message
. ca...
What role does Potassium Sulfate play as a macronutrient?

"zxcvbob" wrote in message
...

"Dave M. Picklyk" wrote:

What is potassium sulfate used for when dosing? I'm just curious

Thanx.
Dave.


Potasium is one of the "macro nutrients", or a major component of all
balanced plant fertilizers.

Best regards,
Bob