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Re: Aquatic Plants Digest V3 #272

A M Moore wrote:
> My Water Quality Report shows:-
> Phosphorus    Min <16.0      Average 487        Max 912 UG/L
> What does this actually mean ?? How do I compare it with Phosphate ppm or mg/ltr ?
> I need to know if these levels are considered high or low & how do they
> compare with the recommended levels of circa 0.1 ppm ?

Hi, Andy,

The units on your report are "microgram-per-liter" or
"parts-per-billion" (ppb).

Your water seems to be very variable (perhaps it is taken from different
sources) and ranges from less than 0.016 ppm to 0.912 ppm phosphorus.