
Full Answer
What animals eat marimo balls?
Rolling the ball gently will help it regain its round shape. Most animals can live in the same tank with Marimo. However, a few types of fish and invertebrates may eat or damage the Marimo balls, including Goldfish, some types of Plecostomus (Plecos), and large-sized crayfish.
How to make a marimo fish bigger?
The Luffy Plump Fertilizer helps the Marimo to grow larger and floppier. This Fertilizer should be added to your Moss Ball once a week. After a week, remove 50 % water from your tank, squeeze the Moss Balls and repeat the same process.
How to care for marimo balls in aquarium?
However, if it starts collecting detritus, take it out of the tank, remove any undesirable algae, and gently swish it in a bucket of aquarium water. The good news is that marimo balls are very easy to propagate.
Where can I buy a marimo?
Buy your marimo at a local pet store or aquarium. Beware! Some pet stores/aquariums sell fakes. Petsmart has been known to sell fakes. A fake marimo is usually made from other types of algae, or Java moss strung or even stitched into a ball. Some are styrofoam or rocks covered in fake moss.

What do you feed marimo balls?
No food or fertilizers are needed since they create their own food through photosynthesis. It's okay to use fertilizer for other plants in the tank, which may promote faster growth. Marimo balls grow slowly: up to 5 mm per year, eventually reaching 2 to 5 inches in aquariums, or 8 to 12 inches in natural conditions.
How do you keep marimo balls healthy?
Keep your Marimo where they will receive llow to medium indirect light. You must protect marimo from the direct rays of the sun, as Marimo can easily turn brown if they are getting direct light! Also keep in mind that direct sun will be intensified by glass marimo enclosures which can heat water quite quickly.
How do you make Marimo happy?
1:474:51How To Care For Marimo Moss Balls (And Keep Them From Turning ...YouTubeStart of suggested clipEnd of suggested clipSo I would only do it during water change. But even it out even throughout the week you're going toMoreSo I would only do it during water change. But even it out even throughout the week you're going to want to sit there and kind of roll it around my fish do it my betta likes to push them around.
How do you fertilize Marimo?
Encourage your Marimo to thrive Simply add 4 drops to your Marimo's container every 2 days for each Marimo moss ball. Change water with fresh tap water every week.
Do moss balls need salt?
The addition of table salt (roughly 5%) to the water can also help, as will a night in the fridge (they prefer cold water). Your Marimo Moss Ball should recover quickly. These fascinating specimens are very resilient and have been known to live for up to 200 years and will grow 0.5 cm a year.
How long do moss balls live in captivity?
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.
How can you tell if a moss ball is healthy?
Although marimo balls can withstand a range of temperatures and water conditions, they may turn a strange color; this is an indication that something is wrong.Marimo turning white/lighter means that it is probably receiving too much light. ... Marimo turning brown may be a sign that it's time to gently clean it.More items...•
How can you tell if a moss ball is pregnant?
0:002:16Pregnant Marimo!? - YouTubeYouTubeStart of suggested clipEnd of suggested clipThey they might even sometimes run into a log or rocks just whatever that is possible underwater andMoreThey they might even sometimes run into a log or rocks just whatever that is possible underwater and so the marvels would fall apart slowly they would get looser and looser.
What do moss balls eat?
Marimo Moss Ball Basic FactsCareIn addition to regular water maintenance, squeeze the ball very occasionally, and rotate it to make sure all sides are exposed to lightOther creaturesThe plant is snail-safe, beloved by most other creatures. Goldfish may eat itLongevityWith proper care, Marimo can last for over a century5 more rows•Apr 26, 2022
Can you keep Marimo in a jar?
They're billed as a low-maintenance houseplant, and that they are: just stick your ball(s) in a jar of water in bright light and, well, that's it. That's right, a jar of water.
How long do Marimo balls last?
In good conditions, healthy Marimo balls can live for 100 years or longer! However, if kept in poor water conditions or neglected the moss balls will quickly deteriorate and die. In fact, one of the main causes of a moss ball dying is the temperature of the water.
How can you tell if a moss ball is healthy?
Although marimo balls can withstand a range of temperatures and water conditions, they may turn a strange color; this is an indication that something is wrong.Marimo turning white/lighter means that it is probably receiving too much light. ... Marimo turning brown may be a sign that it's time to gently clean it.More items...•
How do you clean Marimo moss balls?
How to Clean Your Marimo Moss BallsFirst, remove them from the water and set them in a bowl.Wash the bowl, rocks, and any decorative items with gentle dish soap and warm water. ... Rinse the Marimos under tepid, running water by gently squeezing out the water and allowing them to fill again.More items...•
How do you take care of moss balls in an aquarium?
They appreciate low to medium light, so keep them out of direct sunlight. Most articles recommend growing moss balls in cooler temperatures because of their native habitats, but many hobbyists have seen success keeping them in betta tanks with temperatures as high as 80°F.
Do moss balls need a lid?
Answer: You'll want to keep the cork lid loose or use a permeable one to allow air flow. Marimo moss balls won't stay green for long without a source of oxygen.
What plants pair well with Marimo?
Pretty much any low or mid light plant pairs well with Marimo.
How to keep marimo balls healthy?
How to keep your Marimo balls healthy and looking great. The exact conditions you need to keep in your tank (ph, light, etc) to keep it thriving. 3 things you can do to make it grow faster. And more. Let’s jump into it:
How Quickly Do Marimo Grow?
You may have noticed above that I mentioned Marimo’s dismal growth rate .
What About Shrimp and Snails?
One would think that snails and other creatures with a reputation for eating algae would also eat your Marimo.
How often should I change out my marimo balls?
Otherwise, you may want to change out their water once every 2 weeks. You should also take this chance to rinse them in dechlorinated water to remove any debris they might have collected. Do this, and your Marimo balls will stay happy and healthy. I’ll cover how to recognize health problems later on in this guide.
How to clean slime off of a marimo?
If there are any slimy spots (especially if they’re white), you should clean these off by rinsing with dechlorinated water and then using forceps to manually remove any slime that’s left.
Why is my marimo turning brown?
If your Marimo is uniformly turning brown or grey, this probably means that it’s getting dirty.
Why do we love Marimo?
Marimo are said to bring your heart’s desire to both giver and receiver. And of course, we love Marimo because they live forever.
How to keep marimo from turning brown?
Light. Keep your Marimo where they will receive llow to medium indirect light. You must protect marimo from the direct rays of the sun, as Marimo can easily turn brown if they are getting direct light! Also keep in mind that direct sun will be intensified by glass marimo enclosures which can heat water quite quickly.
What is a marimo moss ball?
Marimo, a Japanese word which literally translates to “seaweed ball” are not moss at all - they’re actually a rare form of spherical algae.
What to do if your marimo turns brown?
If your marimo turn brown, make sure they’re moved to a cooler location with less direct light. They may recover and turn green again on their own. If not, you may add a tiny amount of aquarium ocean salt.
How long do marimos live?
And of course, we love Marimo because they live forever. Well, not forever, but easily 100+ years. For this reason, we often joke that Marimo make wonderful family heirlooms.
Can marimo heat water?
Also keep in mind that direct sun will be intensified by glass marimo enclosures which can heat water quite quickly. Remember - these guys are native to cool lakes, and should be kept cool. Marimo are well adapted to low light spaces and can photosynthesize in normal household light.
Can you travel with marimo moss?
Yes! Marimo moss balls can survive without water if kept in plastic or a closed jar for several days, as long as they aren’t allowed to fully dry out. Plastic bags are the easiest way to travel with Marimo moss.
Why do marimos float?
By nature, marimos float because they produce bubbles when bright UV light shines on their green, lush spherical surfaces. The bubbles act like buoy and carry them up vertically through the water column.
What to do if my marimo is turning brown?
My marimo is turning brown/gray: 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.
What does it mean when your marimo is brown?
Slight browning means you need to clean your marimo.
Where to keep moss balls?
They can be kept in a variety of different habitats, including a bowl, vase, or fish tank. Some have had success with terrariums (water-less) tanks. If you’re looking to purchase a moss ball, definitely do your research before you buy one.
Is Marimos suspended?
Because of this, ALL sales of marimos are suspended. We are monitoring sources such as the FWS (US Fish and Wildlife Service) as the situation evolves.
Can you leave marimo in the sun?
Leaving your Marimo in the sun for periods of time may actually have the exact opposite adverse effect and stunt its growth. In Japan, they actually appear on the bottom of lakes where it’s obviously dark.
What is a marimo plant?
Marimo are sometimes referred to as love plants. According to Japanese legend, two lovers longed to be together—one was the daughter of a tribe chief, while the other was a poor commoner. When the chief forbade the lovers from being together, the couple ran away, fell into a nearby lake, and became marimo balls.
Why do people have marimo?
Then, they were able to live together forever. Marimo are meant to bring luck, love, and happiness to their owner. It is also believed they have the ability to heal a broken heart, so you might want to consider investing in some if you’re suffering from a bad breakup. Find your very own marimo on The Sill.
Why is my marimo changing color?
Yellow or brown marimo is a sign that something is wrong. It could be receiving too much sunlight or have an infection, or their water quality could have gone down. We recommend washing your marimo under running (tepid) water, then replacing the water in their container with cool, filtered water.
How long can marimo live outside of water?
If conditions are ideal, they can live out of water for about a month. However, we recommend a week at the most.
Why is my marimo floating?
However, a marimo does perform photosynthesis, which makes oxygen, and the oxygen bubbles may cause your marimo float up to the surface of the water for a period of time. The more sunlight it receives, the more oxygen it will produce.
Where were Marimo Moss balls discovered?
They’re a freshwater, filamentous, green algal colony. First discovered in Lake Zell, Austria, in the 1820s, the plant was later nicknamed “marimo” by Japanese botanist Takiya Kawakami. ...
Where do marimo live?
Marimo is native to previously glaciated areas of the world, including Japan, Russia, Iceland, and parts of North America. Their spherical shape is created by the tidal force of the lakes. In the wild, marimo call cold, calciferous lakes home. But there’s a way they can thrive in your home space, too. Courtesy of THE SILL.
Basic Guide to Marimo Moss Balls
I recently discovered Marimo Moss Balls and I am completely hooked! I went nuts a few weeks ago and bought 16 moss balls and now have 19 Marimo Moss Balls! Before their arrival, I bought 4 various size glass globes and vases for them and my air plants.
Perfect for black thumbs
I may be new to moss balls but I would feel confident recommending them to those who are looking for a plant but feel like they have black thumbs or want something to start with.
Basic care
To care for moss balls, all you have to do is change their water every week or every other week! When I change the water, I also give their glass vases a quick cleaning too!
Add zen
If you need something simple to help bring calm and peace, I would recommend Marimo Moss Balls.
Moss balls are pets too
I also consider my Marimo Moss Balls to be my pets too! They are both a plant and a pet! They are low-key and low maintenance plants to care for.
How to clean marimo water?
Dump the old tap water out and add new tap water. Use aquarium dechlorinator to treat the new tap water. Chlorine and chloramine can have negative effects on aquatic plants over time. Lightly squeeze your marimo to remove excess dirt and dust, and then rinse it under light running water. ...
How to make a marimo round?
Tie it into a round shape with string. Keep the string firm until your baby marimos develop a permanent round shape. If there is a loose piece of marimo on your marimo, simply pluck it out for it to become another marimo. It does not hurt the marimo by cutting it.
How to tell if marimo is getting too much sunlight?
Check for bright spots. This means it is getting too much sunlight. Move the marimo to a shadier spot.
How to stimulate the inner dormant region of marimo?
Cut your marimo into two halves. This will stimulate the inner dormant region in the center.
How to get a marimo to turn brown?
If your marimo starts developing brown spots, try letting that part get more sunlight. If the brown coloration persists, cut the part off and it will grow back green in the proper conditions. Adding a small amount of table salt to the water to create brackish conditions may improve your marimo's color. ...
What is a fake marimo?
Petsmart has been known to sell fakes. A fake marimo is usually made from other types of algae, or Java moss strung or even stitched into a ball. Some are styrofoam or rocks covered in fake moss. ...
Why can't marimos stand direct sunlight?
Real marimos can't stand too much direct sunlight because they grow on the bottoms of lakes. They cannot handle temperatures higher than 76 degrees fahrenheit. When placed in tank water, it will float for a little while before sinking. ...
How to make a marimo not misshapen?
While you are doing this, it is also a good idea to carefully roll the ball in your hands for a few moments. Since the Marimo is no longer living in a lake with the motion of waves, you may find that your Marimo becomes misshapen over time. Rolling the ball gently will help it regain its round shape.
What are marimo balls?
Marimo balls are one of the most popular plants in the aquarium hobby! Widely kept as ornamental plants in jars in Japan, they also improve water quality by generating oxygen and removing nitrates.
How to keep a marimo from getting brown spots?
If you find your water gets too warm during the hotter months, you can give your Marimo a “vacation” by putting it in a water-filled container in your refrigerator for up to 24 hours at a time.
How long do marimo balls live?
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.
Why is my marimo turning brown?
Lighting that is too intense (such as direct sunlight or high-intensity LED lights) may cause brown spots to appear on your Marimo. If your Marimo is stationary for long periods of time, you may need to flip or rotate the ball to ensure that all sides of it receive enough light.
What does the Marimo symbolize?
They are thought to symbolize close bonds between family members or close-knit friends, and are often passed down to children and grandchildren or nieces and nephews. By the time future generations receive the Marimo, they will be larger in size and will continue to grow with each generation.
Do marimo need lighting?
Lighting. Marimo naturally form at the bottom of a lake, so they do not require special or high intensity lighting. Normal household lighting or indirect sunlight from windows often provide enough light for Marimo to photosynthesize. They tend to do just fine with most aquarium lights and lamps.
How long can marimo moss be in the refrigerator?
Will live and grow best in cool water below 77°F (25°C). If the temperature is too hot, they can be placed in the refrigerator for up to 48 hours but will not survive in the freezer. Change the water and clean marimo moss balls every one to two weeks—more often in summer and less often in winter.
How fast do marimo balls grow?
It’s okay to use fertilizer for other plants in the tank, which may promote faster growth. Marimo balls grow slowly: up to 5 mm per year, eventually reaching 2 to 5 inches in aquariums, or 8 to 12 inches in natural conditions.
Can marimo balls be used for aquariums?
Domesticated marimo balls are very easy to maintain and ideal for beginners. They can live with all types of fish, and are perfect for low-stocked and low-tech aquariums. No food or fertilizers are needed since they create their own food through photosynthesis.
How to get a marimo ball to float?
When you first get your marimo ball, rinse it in aquarium water, place it in the tank, and you’re done! It may float at first but should eventually sink once it becomes waterlogged. They appreciate low to medium light, so keep them out of direct sunlight.
How to propagate marimo balls?
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.
What is a marimo moss ball?
This velvety green orb is neither a moss nor plant, but a species of green algae known as Aegagropila linnaei that gets its unique shape from tumbling about the bottom of freshwater lakes. The nickname “marimo” roughly translates from Japanese as “water plant that’s kind of like a bouncy ball.”
How to keep marimo balls from browning?
As for maintenance, I recommend lightly rolling the marimo ball in your hands every time you do a water change so that it won’t lose its shape. Also, flip it around occasionally so that all parts of the algae get access to light and won’t start browning.
What to do with leftover food in moss ball?
Clean-up crew like freshwater shrimp, snails, and invertebrates are pretty good about picking off any leftover food that gets caught in the moss ball. However, if it starts collecting detritus, take it out of the tank, remove any undesirable algae, and gently swish it in a bucket of aquarium water.
Do marimo balls grow as spheres?
My final suggestion for marimo balls is that they don’t have to live only as spheres. In nature, Aegagropila linnaei also grows as flat mats on rock surfaces, free-floating filaments, or shaggy sheets on the lake floor.
Can you put marimo balls in fish tanks?
Therefore, aquascapers have gotten very creative with their moss balls, unrolling them into thick carpets, draping them on hardscape, or flattening them to make underwater bonsai trees. Other people don’t even put their marimo balls in fish tanks, but rather place them in beautiful jars to serve as home decor.
