However, moss balls are a really friendly form of algae, as it grows just like regular moss anywhere else. It does not spread like other forms of algae. Seeing as moss balls absorb all of the nutrients which other types of algae require to bloom, they can prevent algae blooms from occurring.

Do moss balls help control algae?

Helps Prevent Excess Algae Growth



Marimo moss balls suck up the same nutrients as undesirable algae, depriving invasive algae of those nutrients. I had brown algae growing in my 10-gallon tank, but since wiping them off the glass and adding a few moss balls, they have yet to grow back.

Do moss balls keep tank clean?

Marimo moss balls absorb pollutants such as phosphates, nitrates, ammonia, and other waste solid debris in the surrounding water. Although they cannot completely replace a water change and filtration system, a large ball can help significantly in smaller aquariums.

Do moss balls produce algae?

Even though a Marimo Moss Ball is algae, its not the type of algae that will spread throughout the aquarium. The algae in a Marimo Moss Ball will not turn tank water green. Moss Balls can often be sold on the small side, around 2 inches in diameter.

What do moss balls do for an aquarium?

A moss ball is a species of green algae that is formed into a ball and is two to five inches in diameter. Moss balls are purchased for home aquariums to help absorb harmful nutrients in the water and limit the growth of undesirable algae.

Do moss balls make water cloudy?

When you put the moss ball back into its home, avoid squeezing the water out of it, as this can make the water murky and cloudy. The ball may float when its put back in. If it is floating low, you can leave it as the ball will sink as the air is slowly released.

How long do moss balls last?

As the algae grows in these lakes, the movement of the waves causes them to gradually form into spheres of soft, green algae with a fuzzy, velvet-like texture. Marimo balls are regarded as good luck charms in Japan, and since they have been known to live to 200 years or longer, they are often kept as family heirlooms.

What is in the middle of a moss ball?

The structure of the lake-balls is unique. There is no core (e.g. pebble) in the center. The algal filaments grow in all directions from the center of the ball, continuously branching and thereby laying the foundation for the spherical form.

Do you have to feed moss balls?

You only need to feed the recommended amount in the back of the Marimo Enhance bottle. However if you are doing this, then stop feeding for a week or two and things should improve, some Marimos eat more than others.

Can fish live with moss balls?

Betta fish and moss balls can live in perfect harmony. Aside from their natural velvety-green splendor and contrast amongst other decor, betta fish love playing with and resting on marimo moss balls.

Should I squeeze my moss ball?

You may gently squeeze your Moss Ball Pets to flush out any dirt trapped in it. You may also gently rolls your Moss Ball Pets back and forth on your palm to help them retain their round shape. Moss Ball Pets are living things and they need your love!

How often should you clean your moss ball?

Change the water and clean marimo moss balls every one to two weeks—more often in summer and less often in winter. For plant bowls, replace all of the water with new tap water. For filtered aquariums, replace 25 percent of the water with new tap water. Marimo balls thrive when they’re clean.

Can you cut moss balls in half?

The good news is that marimo balls are very easy to propagate. Simply squeeze the water out of your moss ball and cut it in half with a knife or scissors. Roll the new clumps in your hands to form little spheres, and tie some cotton sewing thread around them to maintain the shape.

How often do you change a moss balls water?

once every two weeks

Change water once every two weeks using regular tap water (for best results, allow water to sit out for 24 hours prior to changing the water). You’ll need to change the water more often in summer, as it will heat and evaporate more quickly.

Why are my moss balls falling apart?

Marimo turning black and/or falling apart.



Marimo is unfortunately known to start decaying from the inside out, especially when it has been covered by hostile algae for a while or when it is simply too big for clean water to reach the inside.

Do moss balls have feeling?

Marimo moss balls are characteristic for their fuzzy texture and velvet feeling to the touch. These beautiful plants are considered good luck charms in Japan.

Why is my moss ball turning GREY?

When they change colors to a brown or grayish color, they often need to be cleaned. If your moss balls turns gray or brown, it’s fine- it’s nothing to worry about. Simply give your marimo a nice shower and it should be fine, use the instructions above to clean your moss ball.

How do moss balls have babies?

They usually reproduce through budding. This is an asexual form of reproduction that can take place when the moss ball is big enough and has enough room to continue growing. You might notice a little bump forming on its rounded surface and that is how you can tell that it is creating another marimo!