Tetra 金魚 AquaSafe

The dechlorinator dissolves instantly, which saved me from waiting around before adding my new fish. My goldfish seem more active since I started using it with every water change.

We switched to this after losing a goldfish to a previous dechlorinator, and the fact that it dissolves instantly with no bad smell is a huge relief. My fish are much more active now, and the water stays clear for days.

I was nervous about using tap water for my fancy goldfish tank, but this dechlorinator dissolves almost instantly and my fish perked up within minutes.