How to Increase Discus Fish Growth

How to Increase the Speed of Your Discus Growth

If this is your first time raising discus fish, you may be wondering how to increase discus fish growth.

When I brought my first group of discus home, I was anxious to see your discus grow as quickly as possible. I tried several methods, and finally, I noticed how big are my buddies.

Here are some things you can do to speed up your discus fishes growth.

Do a 30% Water Change Daily

In general, regular water changes will help all your fish to grow big discus fish faster. This will cut off the build-up of ammonia and other toxins in the water that can stunt the growth of your fish.

For discus fishes, I recommend doing a 30% water change every day. I know this may seem like a lot, but it really worth it when you see your fish growing quickly.

Also, make sure to vacuum the gravel during each water change to remove any uneaten food or waste that has accumulated.

Feed Discus Healthy Foods

It can seem intuitive, but sometimes you might think that you feed discus fish healthy foods when you’re not.

For example, I used to fees my discus pellets, thinking they were high quality. However, I later found out that the pellets were made mostly of fillers and did not have a lot of nutrients that my fish needed to grow.

I don’t mean that every pellet will necessarily harm your fish. Just examine the ingredients list to confirm that the pellets have high protein flake food.

Generally, discus fish need food high in protein to give them the nutrients they need to grow quickly. Some good foods include bloodworms, brine shrimp, white worms, and beef hearts.

For my fish, I do a combination of feeding pellets and live foods. I feel this gives them the best of both worlds in terms of nutrition!

Keep Discus in Smaller Tanks

Yes, you read that correctly, keeping your discus fry in smaller tanks can help them to grow faster!

This is unfamiliar with the “the bigger, the better” rule that we’re used to hearing when it comes to fish tanks.

However, when your discus is in a tank that is not too small or large, they will not have to burn off all of their energy swimming. They will conserve most of their energy, allowing them to grow faster.

For each fish, I recommend a tank size of around 10 gallons. This way, your discus will have enough room to swim but not too much that they get tired easily.

Keep Discus in a School of 10 or More

Discus fish are schooling fish, meaning they feel more comfortable and secure when they are in a group.

Living in a group of ten or more helps them avoid forming a pecking order. In the pecking order, the fish at the bottom are often harassed by the fish above them.

This can prevent the discus from developing uniformly, and over time, some of the early fish may grow larger than others and become deformed.

Not only that, but in an aquarium with a pecking order, the most domineering fish will always get to the food first, while the others will follow based on their rank order from greatest to weakest. This will significantly affect the growth of the weak fish.

Otherwise, if you have a school of ten or more, the fish will be more evenly matched in strength, so they will all have an opportunity to eat and grow at the same rate.

Tank Water Must Be Warm

Discus fishes are tropical fish that dwell in warm waters in the wild. So, it is important to recreate these conditions in the home aquarium to help them grow quickly.

For this reason, I recommend using a heater to maintain the tank water at around 82-86 degrees Fahrenheit.

To keep the water at this temperature, I recommend using an aquarium heater with an automatic shut-off. This way, if the water gets too hot, the heater will turn off automatically and prevent your fish from getting cooked!

Water pH Should Be Conductive

When it comes to the water pH, it is important to maintain a level that is conducive for your discus grow.

However, this can be a little tricky to achieve, but it is possible with a little patience and trial and error.

The ideal pH level for discus fish is between 6.0-7.0. I know this range may seem small, but it really does make a difference for your fish!

To achieve this pH level, I recommend using a pH test kit to test the water regularly. Then, you can make adjustments as needed using pH up or pH down products.

These products are readily available at your local fish store or online. Just be sure to follow the directions on the packaging carefully so that you do not harm your fish!


How Big Do Discus Fish Get?

Discus fish can grow up to seven or nine inches tall when you offer them the ideal living conditions and an appropriate diet.

What Is the Growth Rate of Discus?

In a year, Discus can grow 5-6 inches! Within two years, they should reach 6-7 inches tall as healthy adult discus fish.

Are Discus Fish Slow Growing?

Discus fish grow more quickly when they are baby discus, but their growth rate slows down significantly once they reach around 4 or 5 inches in length. When they reach 6 or 7 inches, their growth will stop.

How to Know You Have a Stunted Discus?

There are several ways to determine if your discus is stunted, including:

  • The fish’s body is long and thin, similar to a football or bullet
  • Their eyes are enormous in comparison to the body’s size
  • One of their eyes is larger than the other

What Are the Causes of Stunted Discus?

There are several possible make discus stunned, including:

  • Improper diet
  • Inadequate tank space
  • Inappropriate water conditions
  • Harsh living conditions
  • Disease or parasites

How Long Does It Take a Discus to Fully Grow?

Ideally, it takes around 2-2.5 years for a discus fish to fully grow. However, this can vary depending on the individual fish and their living conditions.

How Do I Make My Discus Thicker?

If you want your discus to be thicker, then you should focus on their diet. Aside from their main diet, you should also supplement their diet with commercial discus foods that are rich in protein.

Last Words

Discus fish are beautiful creatures that make a great addition to any home aquarium. To help them grow quickly, just give them the proper diet, the right tank conditions, and plenty of space to move around.

With a little patience and care, your discus fish will reach their full size in no time!

I hope you enjoyed this article. If you have any questions or comments, please feel free to leave them below.

Happy fish keeping!