Water Conditions in the Aquarium
Its often said that keeping fish, is more often a case of keeping water. All fish have certain requirements when it comes to water, some are very fussy, and can survive in only specific conditions, whilst others can survive in almost any water, at the right temperature. The majority of fish are somewhere in between, and will survive in most waters, but need specific conditions to breed.
There are several key parameters that your aquarium water must get right to ensure your species thrive. In general, most fish from your local fish shop will be living in your local tapwater, treated to remove chlorine and other additives, that water companies add. This conditions are easy enough to replicate, and will probably be perfectly adequatr for these fish. This is particularly true of the cheaper species that make the bulk of your dealers stock. There are of course other fish that like very different water, and these will require specialist knowledge of their natural habitat; perhaps very soft and acidic, like a rainforest swamp, or hard and alkaline like the rift lakes of East Africa. Providing conditions for these species is easy with a little know-how.