Sam Hopkins wrote:
..
adding potassium nitrate, which can't be legally purchased in my
area. If these plants were in the soil, I'd say they're missing nitrogen.




Potasium nitrate is available in gardend stores and can be found at home depot as water softener salt

I have a feeling who ever you asked that told you it was illegal was
confusing it with amonium nitrate ( which is a fertilizer used to make
explosives )




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John Rutz
Z5 New Mexico

Experience is something you don't get until just after you need it.

see my pond at:

http://www.fuerjefe.com