It's about time someone recommends the good stuff.
NovAqua and Amquel by Kordon are the best, and are the professional standard with zoos and aquariums as far as I know. The important thing to remember is that you need a water conditioner that removes chlorine, chloramines, AND ammonia. If it does not say that it removes ammonia, then it does not. Ammonia is the primary waste product from aquatic amphibians and the nitrogen cycle and is very toxic. It makes no sense to give your amphibians fresh new water that is toxic to them! The Amquel all three, and Novaqua adds a protective slime coat which is beneficial to any stressed amphibian. Go to aquaticeco.com and buy their brand of water conditioners similar to Amquel and Novaqua, but are a whole lot cheaper. This kind of thing does get expensive, but remember this is not optional, when you signed onto getting amphibians you signed on to buy dechlorinators and water conditioners for the rest of its life.
Check out the link below for more water chemistry information.
click here for the link
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...the oldest task in human history: to live on a piece of land without spoiling it."
Aldo Leopold (1938)
"Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us."
Calvin and Hobbes (Scientific Progress Goes 'Boink', 1991)