Hi guy , so just an update , I finish my dry cell and my tank

my dry cell is -NNNN+NNNN-NNNN+NNNN-

space between plate is about 1mm
plate in contact with water = approximately 70 mm by 100 mmm (not sure)
3 hole on top and 1 holes bottom on each plate (except end plate)

I full a 710ml of HHO in 1.25 minutes .... I was expecting way more but I can also get some KOH electrolyte to make it more productive .