The last two times I have made electrolyte solution, I noticed that when the cathode is properly positioned relative to the voltage, the cathode is much deeper in the water than previous occasions. {~1 inch compared to previous ~ 1/4 inch}
I have used the same recipe: 12.4 gm washing soda with enough DW to make 100 mL.
The washing soda is in its original box wrapped in a plastic bag.
Could my problems be because the washing soda is absorbing additional water from the air?
Any ideas?