Why the added vitamins in the water? I think too many vitamins is just as bad as not enough and the Harrison's should have all he needs.
As for water I just use my well water with my Pip. I don't think it matters all that much wild birds drink out of mud puddles after all.. idk
: I did find a pretty good write up on water over on Chewy.com it does say that well water might not be the best. I know my two dogs drank it for 17 years before they passed and their breed has 12 years listed as an average lifespan so I think we are okay
I do have an RO/DI for the saltwater fish so might start using that for Pip... idk