Well i discovered this just by an incident... and an accident happened... an observer got surprised by the strength of the explosion demonstration and dropped it...
Yesterday my cell was drop on the ground and i lost all my pure water.

by lucky the plexyglass didn't break
i finished my new transformer however and it goes very well... it can put out 100v 6 amps and maybe a little more... actually i decided to make it just a 3:1 step down transformer so my variac can actually run it up to 120v applying up to 300v to the primary...
the input of the variac is connected to the 220v line... actually 240pk to pk