Can Brown Java Moss Turn Green Again? {How Long Will It Take?}

Java moss is also hardy and can adapt to varying water parameters. Can brown java moss turn green again?

Java moss is one of the most popular aquarium mosses and they are quite easy to grow. Why does it turn brown?

In this article, we’ll focus on Java moss for a few minutes and help explain the color changes.

Can Brown Java Moss Turn Green Again?

Yes, brown java moss can still turn green again. It is a common thing to see java moss grow brown and appear dead when the conditions are too harsh. But they will rejuvenate and thrive again once the conditions are favorable.

Java moss typically turns brown because of algae in the water, The best way to tackle algae in your aquarium is to treat the water with something like tera algae remover which is available from amazon.

Java Moss Turn Green Again

Why is Java Moss Turning Brown?

The most likely cause of java moss turning brown is poor water conditions that allows algae to grow and spread through out the tank.

If your tank also has excessive light and in direct sunlight this will also help the algae to take over your tank. It is the algae in your tank that is making Java Moss to turn brown.

Below is what your java moss will look like:

Can Brown Java Moss Turn Green Again

Common Problems With Java Moss

As much as the growth of java moss is quite easy, the cultivation of this plant can still pose little problems.

The biggest problem attached to java moss is:

  • algae growth.
  • excessive light and poor water conditions.

3  common problems with java moss include:

  1. It can clog the surface of tank filters if it is not thinned out regularly
  2. It can dislodge from what it is attached to if it grows too thick and dense.
  3. Excessive growth of java moss can also prevent water from reaching the middle sections of the tank.

However, there is no cause for alarm because these problems can be removed with simple precautionary and correctional steps such as to treat the water with something like tera algae remover which is available from amazon.

How To Make Java Moss Turn Green Again

One of the unique features that makes java moss a top choice is for many aquariums is that it is hardy and will grow in most water types.

Likewise, java moss is compatible with almost all species of fish. However, you can get a better result when you keep the plants under ideal conditions.

The best tank conditions for java moss include

Here you will see the points above explained in the below video:

Can Brown Java Moss Be Saved?

Yes, If you see your java moss becoming brown, you can:

  • cure it
  • fix the issues
  • restore it to brilliant and vibrant green.

Some of the most effective methods for making your java moss green once more are as follows:

  1. Setting a tank fertilizer limit.
  2. Controlling the growth of algae.

The first step in reviving a browning java moss ball is to remove algae from your fish tank. Your java moss can grow if there is less competition for nutrients.

Your java moss will be able to get more light for photosynthesis if there are no algae present.

How Do I Increase Java Moss Growth?

Java Moss can tolerate temperatures up to 30oC. Before raising the temperature, it is important to know that the warmer the water, the slower the growth of java moss.

How well java moss will thrive depemds on:

  • light
  • fertilization
  • CO2 

They can cope with both high and low light densities depending on the choice of the aquarium owner. The addition of CO2 and fertilization can also accelerate the growth rate of the plant.

How Long Does It Take for Java Moss to Turn Green?

In around three to six months, the Java moss particles should start to turn green and cover thinly. Within a year to a year and a half, moss will start to thicken and turn into a solid green carpet. Recall that moss requires patience to develop.

Java Moss Trimming

Maintenance of java moss is largely about trimming, and it is dependent on the owner of the tank. You can either decide to allow it to grow wild by only trimming occasionally or trim regularly to get your desired shape.

Trimming java moss requires only a pair of scissors and the process is quite easy.


Java moss is significantly easy to cultivate, grow, maintain and difficult to kill. The plant can however turn brown and appear dead once the conditions are too harsh or extremely unfavorable.

However, the good news is that this condition can be reversed once you make the water conditions favorable. Likewise, every problem attached to java moss in your tank can be solved with simple precautionary and correctional measures.


Thanks for visiting for this article. Check out our home page and search bar with hundreds of aquatic or marine life articles to choose from. Bye for now!


Hello, I'm Jason. I'm the guy behind I volunteer at my local fish shop and I created this site to offer tips and advice on the fish I care for.