I found resonance around 2.5kHz using 2.8H and 3.4H coils wired out of phase.

A couple of points. I believe the Resonance is just the LC circuit resonance, and in that case, ONE inductor. or 2 does not matter, they both act 180 degrees out of phase of the capacitor.

(Simulate it. It works the same)... But also, this CLEARLY implies that the water does not impact the circuit. It is the resonance for the High Voltage, not the resonance of the water, which is

OMG so very high... (Like TeraHertz).

But finding resonant frequencies is interesting. If you are using the VIC, what do you include for the inductance of the transformer? Also, do you really have 3.8H Inductors? I used a small spool

of magnet wire making a 655mh inductor.

What is the capacitance of your tube (as you calculated it)?

At resonance, are you getting a decent increase in voltage? (KV or MV?)

Have you tested you driving circuit by plugging in a straight capacitor and inductor, and having it find resonance, etc?

Finally, is the final game plan to use ONE vic for the entire array of water capacitors? (I Certainly hope so. I can't imagine driving the process with 9 tubes,

9 VICs and 9 circuits). Since the water capacitors are the same, they can be set in parallel or series and net out the same. (Although we dont want to be

switching the +/- poles of the capacitors, so in parallel it is)