None of the above. Get a good vitamin B complex capsule from the grocery store. Mix 1/2 capsule to 1 gallon of water. Mix fresh daily. Make this the only source of water.The problem is I don't know which one to use, I've been using both switching between the two when I change their water.
A good vitamin B complex will contain both niacin and thiamine which will be very helpful along with other essential B vitamins.