Hey mark, are you sure you are geeting 20 volts, and not .20? it doesnt make any sense to have voltage like that on each component. you would usually have one component gone bad. 20 volts should give you a shock (if you are grounded) So just incase wear tennis shoes if you have to touch the water, and avoid touching anything but the water , if you touch the water and then with the other hand touch a metal ballast box, or something grounded you will feel it. Anyway, just from what you are saying I doubt there is 20 volts total.