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When doing a 10 - 20% water change weekly, do I add Tap Water Conditioner?

• I have a 50 gallon tank, and I was told with a 10 - 20% water change, I don't need to add Tap Water Conditioner, as there is plenty of good, de-chloronated water in the tank. I ...show more

• Answer:

  I do know several people who do water changes without dechlorinator even for tanks with Discus and sensitive shrimp! I still use dechlorinator on my tanks as I suspect my water company uses chloramine (which does not evaporate) and don't trust the pipes either - last thing I want is traces of copper killing off my shrimp!