i think i'm getting closer... i saw some small bubbles... at around 20kv and gating i got the frequency doubling wave resonance too triplicating quadruplicating too..
i'm using my old 40kv probe attached to a ac+dc true rms meter...
the problem is that my bobbins are arching over.. now i guess need to coil the chokes again with the new bobbins i prepared. .
my new secondary seem to have blew up also(arc) on the sides but not to core! the bobbin now is good... maybe my winding was not very nice on last layers .. mysterious the diodes didn't burn =) not so mysterious... i think now i'm using it right.. and maybe the last layers are burning because of the high voltage just like should happen to water..
maybe a good idea to fill with oil... or vacuum...
my pumped filter now works very nicely it can recirculate water, filter it, change level, it also helps to fill in and out the water cell...
again it was clear a region just after frequency doubling and before resonant peak a frequency range with higher impedance..
with or without anything connected
may have to do with the secondary..