Also, you need to monitor the quantity of heavy metals, nitrites, nitrates, and ammonia in the water. It is highly recommended that as a discus fish owner, you need to use a reverse osmosis filtration unit inside the fish tank where you keep the discus fish. This is quite advantageous and will make it easier for you to maintain the quality of water but they are not really considered as a necessity. Several Tips to Take Care of Your Discus Fish Discus fish are considered to be one of the most beautiful types of fishes that you can keep as pets in your aquarium. However, you will find that keeping them can present you with a challenge. You have to remember that discus fish are very sensitive when it comes to the water quality they live in as well as the food you feed them. So, in maintaining the water of your tank, you not only need to keep it clean, you also have to get the right pH levels and the proper temperature which will simulate the waters where the discus fish came from, which is the Amazon river. Changing the water in your tank should be done at least once or twice a week. This mesmerizing fish though comes with a hefty price tag. Some sellers have been found to be selling their discus fish in the northern region of 250 dollars. That is very stiff indeed, especially if you want to have more than one discus fish, and if you re going to breed them, then a pair would certainly be needed. The Basic Do s and Don ts in Discus Fish Breeding Having a fish tank at your home not only increases the aesthetics and the ambience of your home, it also provides you an avenue to relieve stress. Many homeowners which have aquariums in their houses swear to the fact that aquariums provides them with a sense of calmness, but of course, the fish inside the tank does a lot to make this happen. Because of this fact, you have to keep one Discus Fish for every 10 gallons of water. Be sure to avoid overcrowding the aquarium, especially with this kind of fish. They will be stressed out and with high levels of stress, the more chances that your Discus Fish will get sick. This means that you have to have a large aquarium in order for you to keep Discus Fish, especially if you are planning on keeping more than two.