Your unit sounds Good....except for the " 1/2 inch above plates"
Comment. I dont completely follow your set up [ I hope ].
The plates have a gaskit all around them except for a section 2 1/4 "
at the top. Ok so the Hydroxy can bubble out the Gap in the seal at the top.
Now you dont want the Electrolyte flooded over the top of all the cells
because then the Current would just Easily jump across [ Leakage ] all
the edges of your plates or provide a leakage path from one cell to the next.
----- Now maybe you have barriers between all the Gaps in your gaskits -
done in such a way that there cant be leakage.
-
Can you describe this area of your design please.
Glenn.