Tea is healthier than water, according to a study carried out at Kings College, London. Not only does it replace fluid, it contains antioxidants and fluoride (good for teeth!).
I know you're not supposed to have caffeine on the anti-Candida diet, but I really would not be able to survive without green tea (and crisps - but that's another story!) - I'm an addict. My particular favourite is 'Double Dragon' from Fujian province in China, available from 'Holland & Barrett'. It's not as bitter, nor as strong as some green teabags can be. It still contains some caffeine, but at much lower levels than 'normal' tea or coffee (which I detest). White tea - if you can find it - has even less caffeine and more antioxidants.