The Best Moss Balls for Aquariums and Fish Tanks (2021 Reviews)

Skylar Dial
Written by
Last update:

Moss balls for aquariums are an excellent addition to any fish tank because of the way they keep the water looking green and beautiful and add a unique relaxing element to your tank.

These moss balls will give your fish tank a natural and beautiful appearance and do a much better job than plastic plants ever could.

I always recommend adding a few different sizes to your fish tank; a large one for the center, a medium one for the side, and a small one for the top. This will give it a really interesting design, but only if you have a tank with proper lighting.

In this review, I’ll share my honest experience from using them and why they’re so great for your tank, as well as the best material to buy, where to find them for the best price, and a few great sellers to purchase from.

NameCategoryProduct
Aquatic Arts 3 Betta Fish BallsBest OverallAquatic Arts 3 Betta Fish Balls
Luffy Giant Marimo Moss BallsBudget PickLuffy Giant Marimo Moss Balls
Marimo Moss 5 Balls Cladophora 1.5 inchUpgrade PickMarimo Moss 5 Balls Cladophora 1.5 inch

1. Aquatic Arts 3 Betta Fish Balls

Our rating: 9 / 10

Aquatic Arts 3 Betta Fish Balls

Check Price on Amazon

Pros:

  • Included with 3 moss balls in green (10 count)
  • Each moss ball weighs 4 grams
  • The moss balls are made in the USA
  • The moss balls come in green color
  • The marimo balls last for up to 5 years (when taken good care of)
  • The moss balls have a diameter 5-6 cm

10 Count.

2. Aquatic Arts 10 Giant Marimo Moss Balls

Our rating: 8 / 10

Aquatic Arts 10 Giant Marimo Moss Balls

Check Price on Amazon

These moss balls are seriously popular and have over 90% positive ratings on Amazon. They can get a bit messy, but that’s true of all decorating materials for fish tanks.

Marimo is a type of underwater moss that grows in the northern hemisphere. There are no roots to this plant, so it has no need for soil. It offers a great place for young fish and shrimp to hide, along with snails.

Even though the moss balls come in a nice cloth bag, they’ll break apart when dropped into your tank. Just make sure to feed the moss balls before putting them into a fish tank. They’re eaten by fish, snails, shrimp, and some frogs.

3. 10 Marimo Moss Balls –  Aquarium Ball Set

Our rating: 8 / 10

10 Marimo Moss Balls -  Aquarium Ball Set

Check Price on Amazon

Pros:

  • Quick to establish – they double in size in just two weeks
  • Can survive in both freshwater and saltwater aquariums
  • Come in a pack with visible differences but otherwise identical
  • Beautiful spherical shape
  • Does not need to be cut or trimmed – all you need to do is put them in your tank and watch them grow
  • Ideal for accent plants

Cons:

  • Using pre-cleaned, chlorinated water when you dunk the balls may prevent algae growth inside the balls
  • The brighter your lighting the more algae and moss is likely to grow
  • Takes a while for it to establish itself

Adorning your tank with these Marimo Moss Balls will add a touch of natural beauty and romance to your aquatic landscape. The balls are almost spherical in shape – each of them measuring about an inch. Its greenish appearance makes it perfect for adding a touch of nature to your aquarium.

But what makes the Marimo balls a popular choice among aquarists is its ability to self-sustain. You really don’t need to do much to maintain them. They will even clean the water in the tank which is great for your Betta and other fish. They also offer shelter for small fish.

4. Aquatic Arts 5 B Grade Giant Marimo Moss Balls

Our rating: 8 / 10

Aquatic Arts 5 B Grade Giant Marimo Moss Balls

Check Price on Amazon

(2-Pack)

5. Marimo Moss 5 Balls Cladophora 1.5 inch

Our rating: 8 / 10

Marimo Moss 5 Balls Cladophora 1.5 inch

Check Price on Amazon

If you’re looking for a decoration that will add color, then the Marimo Moss Balls are the ideal choice. Although they won’t add a lot of bright colors, they’re also quite safe for fish, shrimp and snails.

What’s great about these is that you can place them almost anywhere, and they’ll start growing naturally.

If you’re hesitant about purchasing these because they’re live plants, then we reassert that they are easy to maintain and very forgiving. Plus, they’re quite low maintenance and easy to care for. The initial setup only takes a few minutes and you only have to change the water every 3 months.

6. Aquatic Arts 6 Marimo Family Pack: 2 Giant Marimo Balls

Our rating: 8 / 10

Aquatic Arts 6 Marimo Family Pack: 2 Giant Marimo Balls

Check Price on Amazon

Pros:

  • Includes 6 marimo moss balls
  • Easy to maintain – just add a bit of aquarium salt each week
  • The marimo balls won’t die if left in the sun (as opposed to another type called landlocked pygmy moss balls or sea monkeys)
  • Great option for newbie aquarists – they won’t over-feed the fish, and they won’t overtax the aquarium system
  • Just take them out and use them as a decorative piece

Cons:

  • Not great for fish tanks that aren’t tightly sealed
  • The marimo balls tend to float to the top, so they don’t look that well when you have fish swimming around
  • The marimo balls grow really quickly, so they can get too big to place in a fish tank
  • The marimo balls also do best in highly oxygenated water like in a pond.
  • Pricing may vary depending on size

When it comes to aquariums moss balls are one of the best plants to add. Marimo moss balls specifically are are one of the easiest to plant in an aquarium.

When added to an aquarium, they can be used as a centerpiece, or as decorations for the fish.

7. Aquarium Plants Discounts Marimo Moss Ball Imported from Europe

Our rating: 8 / 10

Aquarium Plants Discounts Marimo Moss Ball Imported from Europe

Check Price on Amazon

Pros:

  • Perfect for beginners; they’re very easy to maintain
  • You can remove and rinse them regularly
  • They maintain clean water and reduce the waste levels in your tank
  • They do a great job of oxygenating your tank
  • Easily add colors, texture, and beauty to your tank if you put in a bunch of them
  • Perfect ball size for small tanks
  • You shouldn’t worry about them getting lost in your tank
  • They’re very inexpensive
  • These are high-quality; they’ll last you a while
  • You can choose from different sizes

Cons:

  • You can overfeed them to the point where they become a pest
  • If you’re using them in a very small tank, they can cause oxygen depletion

(50MG)

8. Luffy Giant Marimo Moss Balls

Our rating: 7 / 10

Luffy Giant Marimo Moss Balls

Check Price on Amazon

Pros:

  • BPA-free
  • Exciting interior décor
  • Unique shape
  • Suitable for most fish tanks
  • Scratch-resistant
  • Environmentally-friendly

Ball, Buy with Confidence, Money-Back Guarantee, Clean & Easy.

9. Crazyo Marimo Moss Ball Shrimps Snails Playing Algae Growth Plant Aquarium Fish Tank Landscape Decoration

Our rating: 7 / 10

Crazyo Marimo Moss Ball Shrimps Snails Playing Algae Growth Plant Aquarium Fish Tank Landscape Decoration

Check Price on Amazon

Pros:

  • Unique ball-like shape
  • Completely environmental
  • Requires little work to maintain and clean
  • Density and texture vary depending on growing conditions

Cons:

  • Doesn’t work well with certain fish tanks
  • Some users report it being too heavy for the small tank openings

Besides bonsai, the Carexx Crazyo Balls is probably the coolest thing you can put in your aquarium to decorate it. The shape itself is extremely interesting and easily the most eye-catching. Combine it with your fish, plants, and other decorations and it really brings your fish tank to life.

These moss balls are a great alternative to regular ornaments, especially if you’re going for a more natural and rustic theme. Plus, if you choose the assorted pack you’ll have a variety of subtle shades of green.

The balls are very easy to clean and maintain. All you have to do is make sure they don’t dry up and throw them in the fish tank every once in a while to add some authentic marine decoration to your fish tank.

10. Aquatic Arts 2 Giant Marimo Moss Balls

Our rating: 7 / 10

Aquatic Arts 2 Giant Marimo Moss Balls

Check Price on Amazon

Pros:

  • LED lights are excellent, and can offer different effects with changing conditions.
  • Pipe cleaner balls save the trouble of making your own moss ball ornaments.
  • You can easily clip an ornament on the glass top of the tank.
  • The Pond-Vivarium is designed with a lot of space for small accessories to go in.
  • The design is simple, but it effectively recreates a pond.
  • Water quality only needs to be occasionally monitored.
  • The pump is quiet and efficient, so it doesn’t disturb you.
  • The pump may be too loud for some people.
  • The heater takes time to warm up the water.
  • The blue LED light is a bit glare.

Aquatic Arts 2 Giant Marimo Moss Balls (1.5-2.5 inches, 8-15 Years Old!) – Over 5X AS Large AS Nano MARIMO! – Great for Fish, Shrimp, and Snails!

11. 6pcs Giant Marimo Moss Balls 0.6"~1.2"

Our rating: 7 / 10

6pcs Giant Marimo Moss Balls 0.6"~1.2"

Check Price on Amazon

Pros:

  • Easy to take care of; grows well in high humidity aquariums
  • Comes professionally packaged, clean, and undamaged
  • They look very natural and fit right in with a wide variety of color schemes
  • The price is unbeatable

Cons:

  • May be difficult to keep their locations constant depending on the movement of the fish
  • The leaves break off easily

A marimo is a type of freshwater algae prevalent in Lake Akan in Hokkaido Japan. They are highly refined and grow into bean-shaped figures about 1-2 inches in diameter. They are most commonly found in aquariums and are usually a valuable addition to them. As marimo is unique to Japan, most people were unable to obtain them unless they traveled there themselves. However, in the last two decades, pet-friendly transportation has allowed for an increase in the cultivation of marimo.

A moss ball is a ball of sphagnum moss that most commonly originates from New Zealand. They are the size of an orange or grapefruit and are usually green or brown in color. Although marimo are a type of moss ball, they are technically different from them. There are plenty of fish that enjoy living around moss balls, but the most popular choice of fish are Goldfish.

12. Joyfay Marimo Moss Ball

Our rating: 6 / 10

Joyfay Marimo Moss Ball

Check Price on Amazon

Pros:

  • 100% authentic marimo moss balls
  • An ideal substitute for live plants
  • No extra CO2 needed for these algae balls to thrive
  • Excellent for boosting nitrate and improving water quality
  • Ideal as a decorative centerpiece
  • Great for aquariums, display tanks, terrariums, vivariums, and paludariums
  • Excellent for saltwater or freshwater tanks
  • Stays fresh for weeks with proper maintenance
  • Ideal for Betta fish-friendly
  • Great for any aquarium or amphibian pet

Cons:

  • The nitrogen levels can rise in the tank with correct maintenance
  • Can fall to bottom during water changes
  • The temperature can drop in a colder tank
  • The balls can sink during feeding
  • Can absorb some of your water conditioners

13. Pevor Pack of 4 Marimo Moss Balls

Our rating: 6 / 10

Pevor Pack of 4 Marimo Moss Balls

Check Price on Amazon

Pros:

  • Light weight & strong for fast shipping (most are)
  • Target for tanks under 20 gallons
  • Eco-friendly / great for fish tanks and terrariums
  • Ideal for apartment dwellers
  • Ideal for nature lovers
  • Nano balls grow without any maintenance
  • Can survive in water that is of low quality
  • Includes packing bag for each ball

Cons:

  • Growth is slow
  • Ideal for Betta fish
  • Can die quickly
  • Need good lighting
  • Ideal for pH neutral and soft water tanks

(Rose Gold)

Marimo is the Japanese word for “ball” or “bouquet”. The balls of water algae is used for decoration purpose and is a great fish tank accessory.

Marimo balls are also used for many other purposes for instance:

Cons:

14. Marimo Moss Balls 0.5 inch Cladophora Live Plant Aquarium in USA

Our rating: 5 / 10

Marimo Moss Balls 0.5 inch Cladophora Live Plant Aquarium in USA

Check Price on Amazon

(50+ Moss Balls)

This product is a great gift for a friend or even yourself. It’s a great purchase for a fish tank or just an everyday aquatic decoration. Since the Marimo Moss balls are so easy to take care of, it’s an excellent choice for beginners.

As stated earlier, the Marimo are extremely forgiving. They thrive in a wide range of conditions and mediums – which makes them great for almost any fish tank. Plus, since they require virtually no maintenance it’s easy to add them to your fish tank and forget about them for months.

15. Fluval Moss Ball

Our rating: 5 / 10

Fluval Moss Ball

Check Price on Amazon

Pros:

  • Turf like a natural aquarium plant
  • Adds a unique look to any aquarium

Cons:

  • Moss balls need to be placed where light can hit them
  • Moss balls need to be kept moist, so make sure to give it a spray once a week

If you’re looking for that “tropical feeling” for your aquarium, then the Fluval Moss Ball Plant is the solution.

It’s not exactly artificial, but close enough. It’s a 100% natural moss ball, and it allows you to soften the look of your aquarium, all while purifying the water.

It’s really based on how much of the plant you’re willing to put in your aquarium. But all in all, you can probably get about 10 moss balls for an average tank.

16. Floro Large Marimo Moss Balls

Our rating: 5 / 10

Floro Large Marimo Moss Balls

Check Price on Amazon

If you’re looking for something a little bit different for a fish tank or aquarium, opting for a colorful piece of Moss Balls is a great idea!

If you’re looking for something a little bit different for a fish tank or aquarium, opting for a colorful piece of Moss Balls is a great idea!

Check the water in the tank every week to make sure that it’s clean.

17. Luffy Doubletail Betta Moss Balls

Our rating: 4 / 10

Luffy Doubletail Betta Moss Balls

Check Price on Amazon

(2 Pack)

These moss balls have a size of 1.5-inches, unlike other Marimo balls that are usually small. They weigh 0.17-0.22oz – making them less powerful for larger fish.

This model of Marimo balls is especially designed for aquariums. This means that you can place them in any water that doesn’t exceed 91 degrees F. These balls also don’t need much maintenance and can last up to two years.

18. Luffy Marimo Moss Balls

Our rating: 4 / 10

Luffy Marimo Moss Balls

Check Price on Amazon

Overall, the Luffy Marimo Moss Balls are affordable, beautiful, and quite elegant to look at.

They do an excellent job at keeping your aquarium clean. The balls don’t require any maintenance and stay alive if you clean their tank once a week. In addition, this set comes with two balls and they’re also well-made and soft on one side — just like the original Marimo balls.

Something’s to remember is that the balls shouldn’t be submerged in the water totally. This is because they’re made up of 100% plant material.

19. Nano Luffy Marimo Moss Balls

Our rating: 4 / 10

Nano Luffy Marimo Moss Balls

Check Price on Amazon

We know that we have what you are looking for if you want to create a new world worth exploring and living in your aquarium and that too with minimal maintenance. These premium quality, perfectly round green moss balls are available at a new and lower price tag for an offer that is so incredible that you will not believe it. The nano-scale size of these spherical green moss balls are ideally suited for nano and betta tanks. Moreover, it comes with an excellent customer service, so that you can have peace of mind while making purchases. Get it for your aquarium and get a new experience of owning a moss tank.

20. Luffy Heart Marimo Moss Balls

Our rating: 3 / 10

Luffy Heart Marimo Moss Balls

Check Price on Amazon

Pros:

  • Available in a wide range of colors
  • Very cute and unique design
  • Perfec for aquariums and small fish tanks
  • Great for soft and hard water
  • Can survive in both acidic and alkaline water
  • Can also survive for a long time without any food
  • Perfect for killing the algae inside the tank
  • Easy to maintain
  • Increases oxygen levels
  • Can be easily recycled

Cons:

  • Can get brittle when frozen
  • Too small for big tanks
  • Needs to be cleaned periodically
  • Doesn’t work for fresh water
  • Not suitable for salt water tanks

Medium Size (Approx. 1.8-1.9 Inches and 0.9-1.1 Inches Diameter)

The Luffy Heart Marimo balls are oval shaped and look like beautiful green jewels. They are perfect for small aquariums, where the balls will provide oxygen and help with ammonia release; they will even help your plants grow more efficiently.

21. Giant Marimo Moss Balls

Our rating: 2 / 10

Giant Marimo Moss Balls

Check Price on Amazon

Pros:

  • Premium quality, the balls are bigger measuring 1 inches to 1.4 inches
  • Come in a pack of 5
  • Free 3 inch than 5 inch diameter than
  • Free 3 inch than 5 inch diameter than
  • Easy to plant and won’t interfere with the function of the filter
  • Non-toxic and eco-friendly
  • Slow growth
  • Ideal for low-light tanks
  • Has a high silica content, which helps to buffer the tank’s water
  • Very easy to clean

Frequently Asked Questions (FAQ)

Are moss balls good for fish tanks?

Moss balls are a great way to give your fish tank a more natural look. They are a fun addition to any fish tank and can be used in both freshwater and saltwater tanks.

Some moss balls have lights, LEDs or small hidden rings inside that can be used to illuminate the tank at night.

Moss balls are great for fish that like to hide or dart around in the substrate, like arowanas for example.

Moss balls also create a great micro biome for the growth of nitrifying bacteria.

A small amount of bacteria will start to grow at the base of your moss ball.

Remember as you are unrolling the moss ball you must try and keep the base of the moss ball intact, it must be a continuous loop.

Some moss balls have holes in them or have perforations in them that allow for faster water flow and ease of oxygenation from the water column.

Which fish tank is easiest to maintain?

I have a feeling a lot of people that are sick of the daily fish tank cleaning will agree that the best fish tank to maintain would be one that doesn’t need cleaning at all!

However, there are so many different types of supplies and set ups for fish tanks that it’s hard to know which one is the easiest to maintain.

What fish can live with moss balls?

Moss balls are a great addition to your fish tank. They help to keep the tank cleaner by eating any leftover food and they also give a great look to your tank. Some fish which can live with a moss ball include tetras (consume the moss ball), barbs, catfish, and smaller fish.

Other fish which can live with a moss ball are betas, cichlids, guppies, and angelfish. Some fish that live with moss balls can also consume the moss balls. If you have a fish tank, placing a moss ball in it can help keep it cleaner.

What is the best aquarium tank brand?

Aqua-tech, Fluval, Marineland, Penn-Plax, and March Aquatic are great choices. They are generally a good bet and have a decent track record for longevity. If your fish tank is a bit on the pricey side it might be worth getting a tank with a high-quality brand name like any of these.

Conclusion

Moss balls are not only visually appealing, but they also perform valuable functions in your fresh water aquarium. They are considered a natural practical filter … and without an activated carbon filter, your fish tank will have cloudy water. The best moss ball for your tank depends on the size of your tank & the amount of nutrients in your water.

Our Recommendation

NameCategoryProduct
Aquatic Arts 3 Betta Fish BallsBest OverallAquatic Arts 3 Betta Fish Balls
Luffy Giant Marimo Moss BallsBudget PickLuffy Giant Marimo Moss Balls
Marimo Moss 5 Balls Cladophora 1.5 inchUpgrade PickMarimo Moss 5 Balls Cladophora 1.5 inch