Java Moss Not Growing? Probable Causes And Solutions


Moss is a plant that thrives in moist soil. Different mosses have different needs, but most need good drainage and plenty of sun light. The lack of these basic factors can cause your plants to stop growing or even die out entirely

The “java moss turning brown” is a common problem for many people. This article will provide you with possible causes and solutions to the problem.

In the aquarium, if your Java moss isn’t growing, it might create problems. It provides food and shelter for the fish, yet it also detracts from the tank’s aesthetic. So, when your java moss refuses to develop, we understand your anxiety.

As a result, today we’ll look at the worries of Java moss not growing.

In comparison to other plants, Java moss grows slowly. Algae and starvation, on the other hand, might stifle its growth. Furthermore, elements like as illumination and high temperatures have an impact on its natural development. Your java moss will flourish in no time if you take adequate care of it by cleaning algae and fertilizing it. 

If you have the time, we recommend that you read the article below. We’ve answered all of your inquiries and dispelled any worries you may have.

Let’s get this narrative started!

What’s the deal with my Java Moss not growing?

Before we begin, we’d like to point out that this part is intended for aquarists who are relatively new to the hobby. If you already know the fundamentals, skip to the section where we describe how to accelerate the development of your java moss.

Stay with us if you don’t want to go! We’ll do our best to explain everything regarding the development of your java moss plants.

When your java moss stops growing, we understand your concern. So, if you’re wondering why my Java moss isn’t growing in my tank, here’s why:

It may seem that the moss isn’t growing because it grows slowly. Furthermore, it’s all too easy to ignore the tiniest features in the tank. While this will not affect other species in your aquarium, it will slow down the development of java moss. 

So, let’s take a look at what may be affecting your java moss’s natural growth.

Factors Affecting the Growth of Java Moss

The parameters discussed here have a direct impact on the plant’s growth rate. Lighting, nutrition levels, water temperature, and other factors are among them. Let’s take a look at them one by one.

Lighting and Positioning

Low illumination is one of the most important variables in the development of Java moss. What happens to Java moss when there isn’t any light?

To mimic its native environment, Java moss demands dim illumination. As a result, the light in your tank must be adjusted accordingly. This difficulty, however, may be rectified by dampening the light.

java-moss-not-growing-probable-causes-and-solutions-2337786Pinterest is the source of this information.

Let’s talk about the location now. Java moss should be placed in the middle to front. Because it is in a higher position, it is exposed to more light, which is not ideal for them.

Water with a High Temperature

Java moss prefers to grow in colder water. It can withstand water temperatures of 15-30°C (59-86°F). However, java moss grows best in a temperature range of 22-25°C (68-77°F).

The harder it is for java moss to absorb nutrients in warmer water. As a result, your java moss will not grow quickly. As a result, it is preferable to keep the water cool.

Incorrect Attachment

Rhizoids are unusual sticky appendages on the java moss. These are used to prevent moss from growing on surfaces. So, if your java moss isn’t floating, should you be concerned?

Attachment is essential since java moss is a slow-growing plant. It won’t grow if your java moss isn’t linked to surfaces like driftwood. This is because it can only take in nutrients and develop once it has been attached.

If it is unable to connect, it will spend the majority of its energy floating. It will be denied of nutritional absorption in this manner, which may result in slower development than normal.

As a result, attaching your java moss on driftwood, bogwoods, or rocks is recommended.

Troublesome Algae

Algae may be found in modest amounts in most aquariums and tanks. They provide nourishment for certain creatures while also assisting in the replication of the natural habitat for all species.

Algae, on the other hand, tend to disrupt java moss. The stringy structure of the moss allows algae to quickly accumulate on the leaves.

1650339382_213_java-moss-not-growing-probable-causes-and-solutions-4408736Swell UK is the source of this information.

The algae suffocate the leaves, preventing them from absorbing nutrients from the water. Malnutrition and even death might result as a result of this.

The only way to get out of this is to get rid of all of the extra algae.


Keep in mind the pace of development of Java moss–

The growth rate of Java moss is sluggish to medium. It slowly absorbs nutrients and grows just 1 to 1.5 inches each month.

The leaves are affected by malnutrition. Malnutrition will occur if the java moss is unable to take nutrients from the water.

This may develop as a result of algae competition and debris being caught on the leaves. The java moss becomes hungry because it can’t absorb nourishment. Its development slows as it grows starved, and it becomes a large clumped mess.

The browning of the java moss is the most typical indicator of starvation. As the leaves get malnourished, they begin to perish. As the leaves lose chlorophyll and are unable to photosynthesize, they become brown.

You may solve this problem by adding liquid fertilizer to your tank. This will guarantee that your tank’s plants are properly nourished.

Let’s get started with the article now that we’ve covered the indicators. Let’s explore what we can do to assist java moss grow more quickly.

How Do You Grow Java Moss Quickly?

Even though java moss is a slow-growing plant, it may be aided in its growth. Let’s have a look at them right now, shall we?

Remove the algae. and alter the tank to let java moss grow quickly. Attachment to driftwood, changing the tank for cold water, and Luminous light may all help. You may also aid it by increasing the flow, pruning it regularly, and fertilizing it. 

For your convenience, we’ve summarized the approaches in the table below. Please have a look!

MethodTime required for the procedureEffectiveness Budget is required.
Remove the algae.Time limit: 10 minutesHigh$10
Driftwood with moss attachedThe complete procedure should take no more than 20 minutes.HighDepending on the driftwood, prices range from $20 to $30.
The water should be cooled.The time it takes for the water to freeze is 1-2 hours.MediumBecause you’re freezing water at home, there’s no charge.
Luminous lightTurn off the light for 8 to 12 hours.MediumYou may save money by just turning off the light.
Boost the flow of waterAttaching takes 20 minutes.High-to-medium$40
Fertilization using liquidsten to fifteen minutesHighDepending on the fertilizer, the cost ranges from $15 to $20.
Brown portions should be trimmed.ten to fifteen minutesHigh$0 as you’re clipping using scissors while trimming with scissors

That concludes the fundamental summary of how to accelerate the growing process. So, without further ado, let’s get started!

Remove the algae.

We’ve noted several times that algae is the most serious threat to java moss. Cleaning the algae will, of course, make it grow quicker.

You have two options for cleaning. Why don’t we take a dive and see what we can find?

Using a Toothbrush

Here’s a unique approach to get rid of java moss-inducing algae:

You’ll need a soft-bristled toothbrush for this. Remove the java moss every three days and clean it with the toothbrush. Remove the algae off the leaves with a smooth sweeping motion.

After that, rinse the moss and replace it in the tank. Your java moss should now grow more quickly.

The Peroxide Technique

Hydrogen peroxide is inexpensive and ideal for this job. What’s more, it’s completely safe to use in the tank.

Other species will not be killed by the peroxide, just the algae. You must follow these easy steps to use this method:

  • To begin, you’ll need to remove 25% of the total capacity of your tank.
  • After that, add 2 teaspoons of peroxide to the water and soak it for an hour.
  • After that, all you have to do is fill the tank. The algae issue will be solved this way.

Now it’s up to you to decide how quickly your java moss will grow. If you’re going to employ this strategy, do it every two weeks. Keep a close check on the java moss to observe how it reacts.

Within a month, new leaves develop. That’ll indicate that your java moss is currently growing at a quicker rate.

Driftwood, bogwood, nets, or rocks may all be used to hold the Java Moss.

You may guarantee that the java moss stays fastened by connecting it to a surface. It may use its energy to acquire nutrients from the water in this manner.

Now it’s your turn to learn how to attach java moss on driftwood.

This is easily accomplished by following a few procedures and using a few tools. You’ll need a rough surface for this project, such as driftwood, bogwood, substrate, or pebbles. You’ll also need some tweezers, scissors, and waterproof superglue.

Here are some possible goods to which you might add your moss.

Here’s how to glue the java moss to your selected surface, step by step.

  • To begin, score the surface of your choosing with the scissors. Make sure there are enough crannies on the surface for the moss rhizoids to connect and stay firm.
  • Then, using the scissors, cut a portion of the java moss. Make sure you receive a bushel with at least 20 leaf tendrils.
  • After that, apply a thin and uniform coating of superglue to the surface. Attach the part to the desired surface using the tweezers.
  • Finally, position this between the tank’s base and the center. After that, repeat the process with the remaining moss.

1650339383_707_java-moss-not-growing-probable-causes-and-solutions-2159337Amazon is the source.

You can also use superglue to secure the Java moss to some net. After that, just let the net float in the tank.

The surface will be the cracks, and the rhizoids will be able to attach themselves quickly. Securing floating plants in one spot also improves the tank’s appearance. Allow the Java moss to breathe.

This ensures that no moss floats away. Within 2 months after all of them have grown, you should have consistent patches of healthy java moss across the tank.

Maintain a Cold Water Environment

While Java moss can tolerate water temperatures as high as 30°C, it prefers lower temps. The ideal temperature for Java moss is 20 degrees Celsius.

You should chill your tank to make it develop quicker. This may be accomplished in a variety of ways. Each of them is straightforward and does not need the use of any extra equipment.

To begin, place the aquarium in a shaded location. Keep the tank out of direct sunlight as much as possible. Keep your tank light off throughout the day. That’s enough of light to keep all of your creatures alive and well.

Secondly, you can freeze a couple of Ziploc bags full of water. Once frozen, gently place the bags on the surface of the water. This way, you can indirectly The water should be cooled. down fast.

If you’re going to employ this strategy, do it every other day and combine it with the first. As a result, there will be no sudden temperature swings, and your tank creatures will not be startled. As a result, no creature will be negatively impacted.

Lighten The Shades

Your tank has a mix of daytime and night plant and animal species. So, whatever light you have, turn it off for many hours at a time. Assume your tank light consumes 48 watts.

So, what are your options for tank lighting? You may turn off the light for 12 hours and then turn it back on for another 12. This manner, you can keep the algae under control by limiting the amount of light. You’re also not starving or denying light-dependent species.

If you’re not sure which light to use in your tank, have a look at these options.

If you have the opportunity, however, it is preferable to use natural light. During the aforementioned hours, leave the windows open to allow the light in and turn off the tank light. The diffused light should aid in reducing algal levels.

Increase The Water Flow

In low-flowing rivers, Java moss is adjusted. This keeps nutrients flowing in the water, making them easier to absorb. Your java moss will grow quicker in a similar environment in the tank.

You’ll need a flow-controlling powerhead for this. Once the powerhead is in place, ensure sure it spins the water 3 to 4 times an hour. The flow rate is between 100 and 120 gallons per hour if your tank is 30 gallons.

Take a look at our selections below if you’re not sure which powerhead to purchase. These will assist you in achieving the desired flow.

The flow generated by the powerheads should aid in the rapid growth of your java moss.

Liquid Fertilizer should be added.

Fertilizer is a simple technique to boost java moss development. Add some liquid fertilizer to your java moss if you want it to grow quickly. And when you bring up liquid fertilizer, it inevitably sparks a conversation. Between Thrive and Easy Green, which liquid fertilizer is the best?

This will help your java moss grow quicker by allowing it to dissolve and circulate throughout the water more quickly. Keep in mind, however, that Java moss will also need the other suggestions in this section.

There will be higher absorption when they are coupled with the fertilizer. As a consequence, growth is accelerated. The following are a few of the most popular liquid fertilizers on the market.

Trim Away The Brown Areas

Plant growth is aided by trimming and pruning. This is also true of Java moss. Take action right away if you observe brown spots growing amid the green.

Remove the moss from the tank and clean it. When rinsing it under the tap, be gentle. As much debris as possible should be removed.

After that, use scissors or a tearing motion to remove the brown spots. Take care not to pull the green portions off while doing so. After removing the java moss, rinse it again and replace it in the tank.

Pale green leaves should appear within two weeks. This type of cutting should aid in the reduction of stringy java moss.


Is it necessary to fertilize Java moss?

Fertilizer is not required for Java moss. It may thrive in a variety of tank environments. However, if you want to accelerate the growing process, you may employ it. The java moss will not be harmed.

Is it possible for brown Java moss to become green again?

Yes, absolutely. Java moss may regenerate its green color. Rinse the moss well to remove any debris. Then, snip off the moss particles that are too brown and lifeless. Replacing it in the tank is the next step. Java moss should become green in a month after the leaves have opened.

What’s the deal with Java moss being so expensive?

Java moss is pricey due to supply and demand. This is an excellent moss to include since it provides food for a variety of little fish and shrimp. Despite its sluggish development, some java moss may grow to be rather huge in only two months. Others might take up to 4 months to mature into a good bushel.


That’s all there is to it. Now you know why your java moss isn’t growing and how to fix it. Keep an eye on your tank to observe how the moss and other inhabitants are faring.

We wish you the best of success with your java moss project. We hope you find our suggestions helpful. Please leave a comment if you found it beneficial.

The “java moss care” is a plant that is often used in aquariums. However, it can be difficult to grow java moss and many people have trouble with their java moss not growing. This article will discuss the possible causes of this problem and solutions for the issue.

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