Discus Care Guide

Aquarium Tank Basic Setup:

Setting up your discus aquarium tank is fairly simple. Most aspiring aquarists have been deterred by choices of tanks, heaters and other equipment. However, the basic simple requirements to start are: 1) aquarium tank, 2) aeration equipment, 3) filtration systems, 4) heating and 5) suitable lighting

Aquarium Tank Size:

What size should your aquarium tank be? Often we get questions from hobbyists how large their aquarium should be in order to ensure the discus grows well. There are no fixed answers for this, but as a general guideline to ensure a healthy environment without causing stress to the fishes the general rule is 1 discus per 10gal (This caluation is taking into consideration a fully sized adult discus). If you intend on switching tanks every so often when your discus grows to a certain size, use our general guide line to give you an idea. Take into account daily water changes at least 80% and good care. Adjust accordingly if adding other tropical fish or aquascaping. 









Suggested plants:Amazon swords, java ferns, Anubis. These plants grow very well and healthy with minimal lighting. 


Although it is a community tank, we do not encourage you to put other types of fish together with the discus fish. Mixing discus with other tropical fish with improper quarantine risk a higher possibility of sickeness occuring. We suggest taking caution if you decide to add other tropical fish and following strict quarantine for all new additional fish. 


Recommended fish: Non-aggressive types of tetras.



Filters are used to process waste and impurities so that the water quality remains pristine, keeping your tank inhabitants healthy. Numerous types of filters are available for different applications:

  • Spong filter, is a great media for biological filtration. Would need an air pump for this type of filteration.

  • Power filters are easy to use hang on filters that sit on the rim of your tank. Water is sucked into the filter, pumped through the media and overflowing back into the tank

  • Canister filters and inline filters have much larger capacity than internal and power filters. Water is siphon from the tank down to the canister filter. Once the water travels though the filter media, it is then pump back up to the tank.

  • Wet/dry filters mix air and water as water trickles over an exposed filter media. Biological filtration and gas exchange occur as the water flows in a thin layer over the media surface. The rapid oxidation of ammonia and nitrite makes these filters extremely efficient.



Water Temp: 

80-88*F, Tropical fish temp zone.

For discus keeping it is recommended at 86*F


There are many heater that are available in the hobby by various brands, but all are simply design to keep the water temp constant and regulated. Aquarium heaters design with glass and other sources emits electrical heat that warms up the water gradually. Prices differ in wattage, example 100watt, 200watt, 300watt. Each wattage is recommended for a certain size tank so carefully read all labels.


PH Level: 

There are many debates about THE perfect PH level for discus keeping, such that discus requires soft water (PH level 6.8-6.0 )resembling that of the amazon. But with the growth of discus keeping and thanks to specialized breeders across the world, discus has grown accustom to higher PH levels. We recommend to keeping your discus tank PH levels to that of whats in the water source. No need for PH down or PH Up, keeping a consistent PH level is the important factor when dealing with PH. Here at Champion Discus, we personally keep our discus in 7.5-7.7 Ph level.  




Aeration is very important as oxygen is needed for all tropical fish in the aquarium tank. In the natural lakes and rivers, oxygen is delievered by the ripples/agitation on the water surface, this causes an exchange of oxygen gas from the water and outer surface. If a hang on the back filtration is in use, this too causes oxygen gas exchange in your tank. Due to the fall of water from the filter coming back into the tank, so an air pump might not be necessary in need but if its a larger tank please take it into consideration or during warmer months.


*Simple air pump will provide enough oxygen to your tank.




Water Change:

First siphon all the waste inside the tank, we suggest using a siphon hose. Once all waste are siphoned, continue to siphon all the water out, for faster water siphon we use a water pump or a larger tubing siphon. Also most of our tanks are drilled with drain pipe for a quick and fast water change.  We do a full 100% water change, your methods maybe different but we suggest getting at least 60% water removed. 


  • We siphon water level down to 20%

  • After reaching 20% water level we introduce new water.

  • We continue on siphoning the remainder 20% of water until the water is clear & clean. Tank then is topped. 

  • Add the water conditioner.

aquarium tank
aquarium sponge filter
aquarium filter hang on back
aquarium heater
aquarium siphon hose

Volume in Gallon                    discus size=      2"               3"              4"                5"

29gal                                                           7                5                2                 1


40gal                                                         10                8                4                 2


75gal                                                         20               10               8                 6