lopez_316us

So my friend insists that putting the water conditioner directly into the tank, then pouring the tap water into the tank is dangerous for my fish. I thought that water conditioner reacts instantly with the water so that the untreated water won't be dangerous for my fish. Can someone please clarify this for me?

Gunnie

Everytime I do water changes with my python, the water goes in, and the conditioner is poured in the stream. I have never had a fish death by doing it this way. On the other hand, I have read where water conditioner was poured into the tank before the new water was added, and fish got sick and died after swimming through where the conditioner was poured in. There probably is some risk in adding the conditioner to the tank while the new water is being added, but I think the risk is small.