In the wild, fish live in large bodies of water such as lakes, rivers, streams, and oceans. These bodies of water are so large that the conditions within them are much more stable than our small ponds and goldfish tanks. This makes them more able to cope with environmental changes or upsets within one part of the system.
It’s important to keep the balance of the tank and everything that lives within it just right. This prevents a range of problems within the tank that can manifest themselves as a rather nasty stagnant or fishy smell.
Does your tank smell bad? Here are some reasons for why this might be, and how to rectify or prevent it…