For water below 3°dH, mixed bed ion exchange resins can be used. It should be noted that the salt mixture contains many minerals, not only minerals that cause the water's hardness, and that the water, after treatment, must have at least 3°dH. The best way to get good soft water for the discus aquarium is to salinate the water produced with RO with a unique remineralizer. Soft water has a very low dissolved mineral content, so an aquarium filled only with pure RO water or distilled water is unsuitable for fish. They usually stay in the lower 2/3 of the aquarium.If they are raised on dry food only, they can become sickly. They are omnivores, and for beautiful, healthy fish in good condition, feeding them with 80-90% live or frozen food is recommended.They are peaceful, but since they are perches, they regularly fight among themselves.Swarm fish, at least 6-8 fish should be kept in >500 liters.Ideal lighting: low/medium brightness 8-12 hours/day.Keeping discus fish only in soft water Aquarium parameters: Native to the Nanay River and associated swamps in the western Amazon. Usually, a smaller species (13-17 cm) prefers more acidic, softer, and moderately warm water (compared to other discus). It is found in the rivers Rio Negro, Uatuma, Nhamunda, Tombetas, Abacaxis, and the surrounding swamps. This discus species generally has a large body (20-25 cm) and prefers very soft, warm, highly acidic water. Native to eastern Amazonia and the lower reaches of the Amazon River. Generally (for discus), a species (18-20 cm) that prefers moderately acidic water, i.e., soft water and medium temperatures. It is found in central Amazonia and areas west of Solimőes. Generally, a medium-sized (17-22 cm) species prefer harder, colder, more alkaline water than other discus. haraldi are described as the same species, although they differ in keeping and habitat. The most common species in Hungary today is Symphysodon aequifasciatus, the easiest to keep. Currently, there are four species of the genus Symphysodon: the Common Discus (S. It is worthwhile to research the natural habitat of the discus and create an environment as similar as possible. Therefore, the information below generalizes the ideal housing conditions for discus fish, which may vary depending on the species and bloodline. discus requires pH 5-5.5 and °dH close to 0). aequifasciatus, which in most cases thrives best between pH 6.5 and 7 and pH 5-12°dH, while an S. Therefore, the maintenance of some bloodlines from the discus culture can vary greatly (e.g., S. However, water parameters most ideal for a particular population are those in their native habitat. The range of water hardness and pH that discus populations are found in their natural habitat is broad. Because wild-caught specimens come from various locations and water parameters, their perfect keeping varies from bloodline to bloodline. Discus fish occur throughout the range of this highly diverse habitat. This information is important because this area contains many freshwater species, from blackwater swamps to karst rivers to crystal clear rivers. Consisting of about 15,000 rivers, it spans seven countries and provides 20-25% of the world's fresh water. It stretches from the Peruvian Andes to the Atlantic Ocean. In South America, this is the Amazon basin, the most extensive water system in the world, with a catchment area of almost 7.2 million km², equivalent to two-thirds of the size of Europe. The discus (Symphysodon) is one of the few aquarium fish for which the origin is one of the most critical factors for keeping. With this article, we would like to make it easier for you to get started in the world of discus. No wonder these fish look amazing and bring a special flair to the aquarium with their appearance. If you are reading this you may have thought about keeping discus fish before.
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