The Discus.com Learning Center

The Discus.com Learning Center is a collection of articles, forming a knowledge base for mastering the art of keeping discus fish. It is a free resource completely dedicated to discus. Whether or not you are a past customer is irrelevant -- we have made the Learning Center a 100% free resource because we want the greater discus hobby to thrive. We believe individual keepers' successes uplift the entire industry.

Begin by browsing the articles below. Each article has a comment section on the bottom so that you may engage our experts -- and each other. We know you are eager to access the website's content. So, let's get started on your journey into the wonderful world of the incredible discus fish, and learn why the discus truly lives up to its name, the "King of the Aquarium."

Pages


Cloudy Aquarium Water
Cloudy Aquarium Water   The issue of cloudy water can be a baffling phenomenon for many aquarium owners. Unfortunately, there is no single answer as to why your aquarium water is cloudy because there is no single cause. However, based on the color and circumstances under which cloudy water... Read More
How to Clean Aquarium Substrates
Aquarium substrates form a critical part of your fish tank. It serves not only as a decoration, but also as a filter. Because of this, it tends to harbor a lot of debris and waste. Cleaning gravel involves the process of removing some aquarium water. Because of this, most aquarium hobbyists will... Read More
Frequency of Discus Water Changes
Introduction   Clean water is a key to discus fish health. A clean tank with a constant exchange of new, fresh water will work wonders for your discus’ health. In this article, we will explain how to keep your water clean without requiring fancy equipment like reverse osmosis filters.  
Best Aquarium Water Test Kits
Testing aquarium water is a key component of maintaining a healthy environment for fish. Below are a list of aquarium water test kits and some information about them.   Best Aquarium Water Test Kits – Master Test Kits
Water Parameters for a Discus Aquarium
If you do a Google search for Discus water parameters you will see a lot of conflicting information. Many Discus owners become obsessed with water parameters to a point where they take the fun out of the hobby. We as Discus owners ARE NOT chemists! So- don’t worry too much about the water... Read More
Best Filters For Discus Fish
RO (Reverse Osmosis) Water for Discus
Reverse Osmosis
More on Discus Water Changes
Introduction   Clean water is a key to discus fish health. A clean tank with a constant exchange of new, fresh water will work wonders for your discus’ health. In this article, we will explain how to keep your water clean without requiring fancy equipment like reverse osmosis filters.  
Best Aquarium Heaters for Discus fish
Beginner FAQ: Practical Water Chemistry
What You Need to Know About Water Chemistry, and Why Water in nature is rarely pure in the ``distilled water'' sense; it contains dissolved salts, buffers, nutrients, etc., with exact concentrations dependent on local conditions. Fish (and plants) have evolved over millions of years to the specific... Read More
Types of Filters
When you start your discus aquarium, you can consider several different types of filters. You may even choose to use more than one at the same time to maximize water turnover. In this article, we discuss the most common commercially available filters. Internal Internal Filter
The 3 Most Important Chemicals to Monitor
The 3 Most Important Chemicals to Monitor
In this article, we explain why you especially need to monitor your tank's levels of ammonia, nitrite, adn nitrate. We also explain how you can remove these chemicals from your tank's water when necessary. Assorted Discus
General Water Hardness (GH)
General Water Hardness (GH)
What does the General Hardness Measure? The General Hardness (GH) of your water measures the amount of calcium and magnesium ions in your water. Water with a low general hardness is considered soft. Water with a higher general hardness is considered hard.
Carbonate Hardness
Carbonate Hardness
Carbonate Hardness (KH) is similar to general hardness. However, instead of measuring calcium and magnesium ions, it measures carbonate and bicarbonate ions. The higher the KH, the more stable the PH. Although KH is indeed beneficial, excess KH will stress your discus. For that reason, KH must be... Read More
Water Conditioners
Water Conditioners
Water conditioners neutralize chlorine or chloramines in tap water. Since chlorine and chloramines can be harmful to discus, water conditioners are important. Avoid the thick, syrupy types of conditioners because they can clog filters, reduce efficiency, or coat the inside surfaces of the aquarium... Read More
pH Reducers and Alkalinity
pH Reducers and Alkalinity
You can use a pH reducer during water changes to lower the pH level of your tank. pH reducers are a type of acid. Before adding the pH reducer to your tank, you should dilute the reducer by mixing it with water from the tank. pH Reducer Before you use a pH reducer, however, you need to make sure... Read More

Pages