1) Turn on the power and touch the two silver electrodes together and see what the ammeter reads. This is the value you should get in your electrolysis cell. Record that and turn off the power.
2) Set up your cell with water and electrolyte again.
3) Disconnect your ammeter.
4) Set your meter to volts
5) Connect the red meter lead to your positive electrode.
6) Connect the black meter lead to your negative electrode.
7) Connect your current regulator directly to the anode.

Turn on the power and read the voltage across your electrodes
9) Adjust your negative electrode up or down to get 10 to 15 volts
10) Time your run according to the reading you took in step 1.