That depends upon the species of fish you have. Some species must have soft water to survive.
The type of water you use in your fish bowl depends on the type of fish you plan to put in the bowl. You can use tap water, soft water and bottled water in a fish tank.
fish can
it depends on how soft or hard your fish's skin is. i would say no because some decors are made of clay.
no it is not but it would hurt them to where they could die
Koi need water that is on the hard side of the scale in order to do well although they can survive in reasonabley soft water.
Tetra fish are typically found in soft, acidic water in the wild, such as in the tributaries and streams of the Amazon basin. It is important to replicate these water conditions in an aquarium to ensure the health and well-being of tetra fish.
Tropical simply refers to fish that are from the tropics, and does not denote an entire, uniform group. There are many types of tropical fish, and they all come from areas of the world which are hot, but that don't have similar water characteristics.In other words, some fish need hard water, and some fish need soft water. For example, most of the tropical fish from South America prefer soft water. In contrast, fish from the African Rift Valley Lakes, also a tropical area, require very hard water.no way hozay
The acidity of your tank water can kill your fish or make them sick. Before deciding on what fish you want to put in your tank; you should ask your local pet-store what kind of water the fish prefere. Some fish like hard water (high acid) and some fish like really soft water (low acid). Most fish at the pet store will be happy in moderately acidic to soft water. I keep my tank at 7.0 on the pH scale.
it hurts fish,ducksand oter things in the water.
Its probably from the filter you are using, and probably from the natural fish oils.
Some tropical fish come from hardwater areas (African Rift Lakes Cichlids for example), whereas other fish come from soft water areas (Amazon River Basin fish - most tetras, angelfish, a lot of other fish). Many others come from intermediately hard water areas, for example barbs and rainbows. The best solution in a community tank is to go for moderate hardness, as it will best accomodate most species.
jelly fish.