Well,
My son came up with a 9kv neon xfmer for me today, so I was anxious to
try a HVCS setup.
I took a wide mouth jar that seems to hold 2/3 gal. Cut a tapered plug
for the mouth out of a piece of 5/4 oak on the bandsaw, and drilled 2
tiny holes to be able to slip the silver wires thru.
I made the first run using tap water, just to see what to expect.
One wire is about 10" long, goes to the bottom of the jug with the
excess coiled on the bottom.
The other wire is about 5" long and is adjusted to be about 1/8" above
the water surface.
Clip leaded the xfmer leads to the silver and let "er rip.
Got an arc between the short lead and the water, no cone of water.
After about 30 seconds I noticed a gray netlike veil slowly falling
from the long silver wire. I let the process go on for an hour.
The water was grey,distinct tyndall, gray fallout on the bottom. 
Kinda what I'd expect from tap water. No big reflective particles
though.
I dumped this batch in a garden sprayer and went out and sprayed a
Hawthorn that has been plagued with Fire-Blight for the past 35 years.
We'll see!

Ran a second batch with distilled water.
Checked it with the TDS1 b4 the run, it read 001.
Same setup as above, and this time I got a cone of water rising around
the suspended electrode. Checked the progress every 1/2 hr. No veil or
obvious action from the electrodes except the cone of water.
At the end of 90 minutes I was surprised to see the water had turned
golden, and the cone had dropped away from the electrode. Arcing had
replaced the cone.
Distinct Tyndall with no shiny particles or any visible particles, I
usually see some with the 27VDC setup.
No fallout or residue. TDS1 reading of 16.
I guess it's a keeper!

This group is a terrific resource, especially those willing to answer
endless questions with infinite patience. 
                                                Chuck


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