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Re: PMDD and copper
> From: Ed Street <br at ldl_net>
> Subject: PMDD and copper
>
> today I picked up some stuff from a local nursery and he gave me some
> trace mix, potassium nitrate (13.75-0-46). He also gave me this paper and
> told me that this was the ingredience cept there was no N-K-P in it. I was
> told that he uses a pinch of trace mix to 5,000 gallons of water. we took
> a pinch and disolved it into 2 oz. of water, he tested the sulfates (some
> probe)
sounds a little dubious...
> and computed the ppm
???????
> based on the readings, they are as follows
>
> Boron (B) 4.5%
> Copper (Cu) 11.25%
> Iron (Fe) 22.5%
> manganese (Mn) 11.25%
> Molybdenum (Mo) 2.25%
> Zinc (Zn) 11.25%
This is clearly bs. According to this, the metals alone add up
to 60% or so. With the EDTA chelating agent and anion in there, the
metals should total only 10% or so.
> Oh! I forgot to mention the ingredience in this trace mix. Derived from:
> Iron EDTA chelate, Manganese EDTA Chelate, Copper EDTA Chelate, Zinc
> EDTA Chelate, Sodium Borate, Sodium Molybdate.
Get a proper analysis of this stuff. The manufacturer should provide
it.
--
Paul Sears Ottawa, Canada