A tip for you to reduce stress:
What I do is I have a tub like a Rubbermaid tub and i fill that with tap water and use the appropriate amount of conditioner. And I use a pond pump to pump the conditioned water into the tank. That way theres no chance that the regular water to hurt or stress the fish.
Some people drain their tank. Fill it back up and then add the conditioner or add the conditioner while filling it up. IMO, the fish are still getting hit with tap water causing stress.
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