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Quite simply, a saltwater aquarium is designed to offer saltwater marine life with a familiar and contained environment. As a hobby, saltwater aquariums allow individuals to purchase fish as pets and keep them inside their home. The first saltwater fishkeeping, for personal use, became increasingly popular in the 1950's and was widely enjoyed through the use of glass aquariums that are still famous today.
Goldfish are tuff fish that can live in conditions that would quickly kill other types of pet freshwater fish. A lot of people bring home goldfish believing they do not have to do anything but feed them. That is wrong! Following a few easy tips you can make sure your goldfish are happy and healthy.
Magnesium is often one of the most overlooked properties of your reef’s synthetic seawater and although this is one of the most important factors considered in growth and health of most stony corals. Just like calcium and alkalinity magnesium is depleted by your reef inhabitants.
Discus fish prefer large tall tanks and I would recommend a minimum of 55 gallons (200L). As for the setup, it entirely depends on the purpose. If for breeding, it is best for the tank to be bare bottom, meaning without any gravel. However, if you want a show tank then it is best to emulate the natural habitat of the Discus fish by provide hiding places, open swimming areas, driftwood, fully planted aquascape and some floating plants to diffuse the light.
I believe that a Discus fish aquarium should be entirely geared toward keeping Discus fish, as other species generally do not require the dedication and environment that Discus fish need. The setup, plants and other inhabitants should be carefully chosen for optimal conditions, giving the Discus fish first priority.
The Discus fish is a South American Cichlid that belong to the genus Symphysodon, which currently includes three species: The common Discus fish (Symphysodon aequifasciatus), the Heckel Discus fish (Symphysodon discus) and a new species of Discus fish which has been named Symphysodon tarzoo.
Before making an attempt at breeding Discus fish you will want to have kept Discus fish for a while. Breeding fish with the exception of perhaps common livebearers is a lot of work and experience with keeping the fish is vital to success. To try and breed a fish as delicate as the Discus fish without having that experience would likely be quite the debacle.