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You might also want to look at your equipment before you add salt!!!!!
Salt water will deystroy any equipment with metal parts. Saltwater aquraium equipment does not contain metal parts, you .

Corydoras in the aquarium

Corydoras aeneus

The large corydoras family contains at least 120 different species, and a lot of these are widely available in aquarium shops all over the word. Their popularity is not surprisingly, they have nice coloring, are .

Hardy Freshwater Fish for Starting Aquariums

Although there are many ways to establish the nitrogen cycle in an aquarium, most hobbyists choose to use so-called "starter fish for the purpose. Perhaps this is because this method allows the new aquarist to have life in their aquarium while the tank is still new. The key to stocking an aquarium is to be patient! The following is a list of fish, which, in our experience, have proven hardy enough to survive the initial "break in" period of a freshwater aquarium. The creation of this list was not based on any type of scientific method, but rather on our own experience with the many aquariums we've installed. Each species on this list has consistently proven able to tolerate high levels of ammonia and nitrite, for at least four weeks, in the many freshwater aquariums installed by The Aquarium Professionals Group. Note to Experienced Hobbyists: This is a list that was written mostly for beginners. In some cases, we felt that it was best to use the common family names that aquarium and pet stores use for fish, rather than actual scientific classifications, so that beginners could easily find species with which to start their aquariums. No wise-cracking email please! It is important to note that we have tried many other species within the same Family or Genus as those shown on the list. However, we have found that not all members of a given Family or Genus are equally hardy. For example, while many species of Gourami have proven themselves as "cycleable" species, we have not had consistent success with the Honey Gourami, Colisa chuna, and several other Gouramis. There are also many fish in a given family that we have not tried, because they were not available at the time, or some doubt existed as to whether they would survive, based on literature we've read. There are many other suitable freshwater species for starting a new aquarium, but space does not allow us to include them all. We have listed some of the most commonly-available species in this list.