Very Very nice steve!

Its very nice, the design!
How many volts and amps you are going to apply?
I was guessing That if you could apply 120v at maybe 5,55 amps you would have like 555 amps that would dissociate almost 200ml of water in one hour! this would make about 400 liters of gas in one hour or 8 liters of gas per minute!
How about the gas output? you are going to keep a bubbler with the water level higher than the plates? I'm a bit confuse...
Be careful
and
Well done!
Regards
Fabio
Thanks Fabio

The target voltage is around 1.5V per cell till 2V.0 volt max.
Gasoutput is estimated between 15 and 20 litres a minute.
Efficiency must be around 100% Faraday.
To take away your confusion, i can inform you that on top of this wfc will come indead a special made waterreservoir with 2 waterout pipes on the right and gasinlets on the left.
On top of the reservoir will be the gasoutput.
So, waterlevel is higher then the wfc.
Regards
Steve