It has been demonstrated that a 27% KOH/Water electrolyte is the most efficient formula for making Hydroxy.
Wouldn't it be great if this became the standard by which all experimenters could compare results?
Here's how to make it:
Take a CLEAN vessel and add 730 ml of pure distilled water. (24.68 oz.)
(Don't treat your cell worse than your car battery.)
SLOWLY add 270 grams of KOH. (9.5 oz)
Stir with a CLEAN stirrer.
At that point you have the best mix for a cell.
Anything after that is because of your design and technique.