Your wasting your time trying to plate bright zinc with home brew electrolyte solutions. Yes you can do it but the parts will come out dull due to lack of brighteners. Go to google patents and look what goes into making a bright zinc plating electrolyte it's not 5 th grade chemistry
You can go to caswell buy some degreaser, brighteners and solution for around a $100, a DC power supply off amazon for $50 and your in business. $5 of sodium dichromate off eBay et.
