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Some of you have suffered through my previous messages wondering about my
water, which I already know to be very soft and very alkaline, with
significant buffering capacity. Recently I had speculated on the
possibility that it had a lot of silicates. It seems I was right. Here is
the full analysis, for which I just got results:
Ph 10.4; conductivity 172 us/cm; alkalinity 69.3; Phosphate P 0.01 ppm;
Total Kjeldahl N <0.1 ppm; NH4-N 0.01 ppm; NO3-N 0.03 ppm; Ca 1.2 ppm; K
1.43 ppm; Mg 0.023 ppm; Na 34.6 (units not given, I suppose ppm); Zn 0.006
ppm; Pb <0.008 ppm; Si 15.2 ppm; Cl 1.5 ppm; Mn <0.002 ppm; Fe 0.002 ppm;
Cu <0.002 ppm; As <0.01 ppm; Se <0.01 ppm; Cr <0.002
It seems like this water is essentially a solution of sodium silicates
without much of anything else useful. The alkalinity in this case can be
attributed to the sodium silicates.
I would like to be able to remove the silicates and would appreciate it if
anyone knows of a method to do this. I know that RO units quickly lose
their ability to remove silicates. Of course, that would leave me with
something near distilled water. I will have to add something like RO Rite.
Does anyone know of a cheap alternative, including homemade versions? RO
Rite is expensive considering that the ingredients are cheap. Currently I
add some CaCl2 and MgSO4. Some of that probably precipitates out as
I have also mentioned recently that I have no luck in growing java moss,
which used to grow like a weed in my water in NY. I am wondering if this is
simply due to nutrient deprivation. The Fe in this water is very low.
Anyone know of a recommended Fe content in the water for non-rooted plants
like java moss?
Barry J. Cooper, Prof. Emeritus, Dept. Biomedical Sciences, Cornell University
Adjunct faculty, College of Veterinary Medicine, Oregon State University
Home address: 27505 Riggs Hill Rd., Sweet Home, OR 97386 (bjc3 at cornell_edu)
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