Plants will help keep the water oxygenated and keepdown the levels of nitrites and ammonia in the water. Discus fish enjoy havingplants to hide in, particularly if they are breeding. Your discus will behappiest with plants that require little maintenance on your part, as the fishcan become agitated if you are frequently invading their habitat. Since yourdiscus fish tank will have warmer water in comparison with aquariums used toraise other types of fish, you must choose plants that will thrive in warmwater. Java ferns and Amazon Swords both grow well in warm water tanks, as doplants in the Echinodorus family. A few tall, thin plants will help create anice landscape for your fish.
Discus fish are tropical, so the water in yourdiscus fish tank should be kept between 85 to 88 degrees, the warmer tanks helpdiscus fish grow faster. Make sure that you use a good heater and that youmonitor the temperature frequently; if the water becomes too cool, your discusfish will stop eating and lose body weight. Water that is slightly soft isrecommended, and the pH should be between 6.5 and 7.0. The tank must be wellfiltered and do water changed regularly, 25% per week, as ammonia and nitrite willbuild up in a dirty tank that can harm your discus fish.
Because the higher temperature of the waterdecreases the amount of oxygen produced, it is important that the tank receiveadequate lighting for about ten hours per day so that the plants will be ableto undergo photosynthesis and produce oxygen. However, your discus fish tankshouldn’t be set directly in bright sunlight because the discus fish do notlike it and because it can promote the growth of algae in the tank. Fluorescentlighting, especially compact, will provide plenty of light, and you couldconsider using color filters as well.
Choosing the right Discus fish tank mates is important, not just for the well-being of your Discus fish, but also the neighbours too. Discus fish require a fairly specific water PH level, hardness as well as a high temperature. This rules out a fair amount of tropical fish species from being suitable tank mates. Discus fish are not typically considered “community fish” that being said there are a number of tropical fish species that can thrive in a tank predominately set up for Discus fish.