My grandson washed a decoration with soap and water. I know you are not supposed to use soap. He rinsed it thoroughly, but fish are dying. What should we do?


Have you tested your water quality? It is possible that you are having some issues with NH3 or NH4. It is also possible that there is something wrong with your cycle. If the decoration was rinsed well and allowed to dry before going in the tank, they should be fine.

Updated on April 12, 2018

Original Article:

Decorating Your Fish Tank: Dos and Don'ts
By Alex