Changing the water in your tank should be done at least once or twice a week. A partial change will also be good and it will require less handling of your fish. Changing at least a quarter to half the water in the tank will suffice as long as you have a good biological filtration system installed. In some cases, some aquarists would just add some medication to clear up the dirt. The Do s Do buy a big tank if your existing aquarium is small. For a pair of discus fish, a 27 gallon tank will suffice, but if you have more pairs, then you should get a bigger one, 75 gallons will do the trick for 3 to 4 pairs of discus fish. Do give your discus fish an area in the tank for them to spawn. And, as you can imagine, chlorine is a chemical that is not good for discus fish. Today, there are available test kits that you can use to test the water if these chemicals are present in the water and also how much of it is present in the water. Water conditioning is the process of removing these chemicals from the water. Your next option, and the most expensive one is going to an importer and getting an adult pair already, at this stage they may already be about 6 inches long. This is the surest way that you will be able to get a pair of discus fish of the opposite sex. The problem here is that if you don t know how to look at a discus fish to determine the sex, you may get duped. First you won t need to take them for walks, you don t have to give them baths, they don t demand much attention, and you don t really have to clean up after them after every while. Yes they still need some looking after but not as much as compared to our canine and feline friends. This doesn t mean though that once you have your tank, filled it up with water, and purchased your feed then your all done. In their natural environment, discus fish are known to be grazers. This means that in their natural environment, they will constantly seek food. This is why you should try feeding your discus fish a few times each day. However, you may want to prevent over feeding them. The rule in feeding discus fish is to not feed them more than 5 times a day and less than 3 times a day.