• Aegagropila linnaei - Marimo Moss Balls
  • Aegagropila linnaei - Marimo Moss Balls
  • Aegagropila linnaei - Marimo Moss Balls
  • Aegagropila linnaei - Marimo Moss Balls
  • Aegagropila linnaei - Marimo Moss Balls
  • Aegagropila linnaei - Marimo Moss Balls
  • Mixed pack of 20 Marimo moss balls in assorted sizes
  • Five 1cm mini Marimo moss balls - Aegagropila linnaei
1 5

Aegagropila linnaei - Marimo Moss Balls

Easy going, easy care and ideal for nano and shrimp tanks

£3.99
£3.99
Size
    Description

    Aegagropila linnaei, better known as Marimo, is a freshwater green alga that grows into a dense, velvety ball. It's one of the simplest ways to add living green to an aquarium: no planting, no CO2 and no special lighting. Pick the pack that suits your tank below.

    Choose your pack

    • Mini - Pack of 5: five balls of about 1cm. For nano and shrimp tanks, where a larger ball would look out of scale.
    • 2cm - Pack of 5: our most popular size. Five 2cm balls, enough for a natural grouping across the foreground or around rocks and wood.
    • Pack of 20: 20 Marimo balls in mixed sizes. The best-value way to stock a new shrimp tank or a larger layout in one go.

    Care

    • Light: low to moderate. Keep out of direct sunlight, which can turn them brown.
    • CO2: not needed.
    • Temperature: Marimo prefers cooler water and does best below about 25°C.
    • Growth: very slow, only a few millimetres a year. The size you buy is roughly the size you'll keep.
    • Shape: roll them gently between your palms at water changes to keep them round and evenly green.
    • Shrimp: shrimp graze the surface biofilm and are often found sitting on them.

    What you receive

    Loose Marimo balls in the pack you choose. They're not potted and need no attachment. Sizes are approximate, as each ball is a natural product. Rinse them and place them on the substrate. If one floats after transit, squeeze it gently underwater to release trapped air and it will sink.
    Our Delivery Promise To You

    We pack every order carefully at our UK facility and dispatch quickly, so your plants and aquarium products reach you in the best possible condition.

    Order before 4pm Monday to Friday and we’ll dispatch the same day where possible. Most orders arrive within 1-2 working days.

    If something goes wrong in transit, get in touch and we’ll help put it right.

    Aegagropila linnaei - Marimo Moss Balls
    Aegagropila linnaei - Marimo Moss Balls
    Aegagropila linnaei - Marimo Moss Balls
    Aegagropila linnaei - Marimo Moss Balls
    Aegagropila linnaei - Marimo Moss Balls
    Mixed pack of 20 Marimo moss balls in assorted sizes
    Five 1cm mini Marimo moss balls - Aegagropila linnaei

    Customers praised these aquarium additions as "healthy" and "great" for tanks. Most arrived in excellent condition with quick delivery. Shoppers loved that fish and shrimp enjoy them. Some concerns: occasional brown patches, sizing smaller than expected (though accurate per listing), and rare delivery issues causing dryness. Overall highly rated for value and quality.

    • Quick delivery arrived healthy and thriving in my aquarium
    • By far the best moss balls I have ever purchased
    • Super healthy looking and good value too
    • 5 stars: 44 (80%)
    • 4 stars: 6 (11%)
    • 3 stars: 2 (4%)
    • 2 stars: 2 (4%)
    • 1 star: 1 (2%)
    Some of the reviews shown are from related products the merchant grouped with this one.
    P
    Phillip B. (London, GB)
    Great way to buy moss balls

    Bought two tubs of these, all healthy and pest free. Sizes ranged from a couple of cm in diameter to about 4cm. One tub was used to cover my spider wood branch and the others contents just left loose in the tank. Great service from AE as always.

    Phillip B. review photo
    Y
    Yosef

    Amazing!!

    S
    S.W.

    The cutesy little mossball ive ever seen and also very well packaged.

    R
    R.P.

    Fab

    L
    Lewis M. (Glasgow, GB)
    Excellent

    Quick delivery arrived healthy and thriving in my aquarium

    A
    Aisha W. (Durham, GB)
    Nice

    Moss balls are just that.
    Disappointed with size. Photo on website looked bigger than they were. But arrived in great condition. Hopefully they'll thrive in my tank

    L
    Laura O. (Manchester, GB)
    Great quality

    Great selection and fast delivery.

    R
    Robert S. (St Helens, GB)
    Amazing!!!

    very fast shipping. I ordered in the afternoon and received it the next day!!! very good quality. I am very satisfied and recommend it

    R
    Rolf

    Excellent

    R
    Rolf W. (Sunderland, GB)
    Good

    They arrived within 48 hours and needed put in water preferably rainwater they all sunk well and they are good in shape and greens
    Always again 👍😎

    S
    Stuart C. (Luton, GB)
    Not up to usual standard

    3 moss balls wouldn’t sink and broke up when I took them out and 3 others at the bottom are brown in places

    J
    Jessica L.
    Review

    No issues

    K
    Kath O.
    Review

    I saw these on the internet and was fascinated by them. Having shopped around I decided on this site and they were the best value for money and also I had heard about fake ones and knew from looking at these they appeared genuine. They arrived quickly and in good order and looked healthy. I put them in water and they sank as exactly as they should. They are looking good in my large vase.

    K
    Karin K.
    Review

    Arrived in excellent condition.The moss balls were very clear when I washed them.

    B
    Brian W.
    Review

    well pleased with these

    A
    Anne C.
    Review

    I'm pleased with the quality of the moss balls. They're a lovely addition to the tank. Unfortunately however not the best idea to put them in a tank with large goldfish. I'm growing them under pots from some of the other plants I ordered meantime.

    J
    Jane N.
    Review

    Great little moss balls enhance the tank and give the shrimps something to play with

    A
    Arran D.
    Review

    MAJOR WARNING - Moss balls were infested with Zebra Mussels; an extremely invasive and destructive species. When released into waterways, they are practically impossible to remove and have a devastating effect on native ecosystems and infrastructure (check out issues caused in the US at the moment).

    As per guidance, I've submitted a non-native incident report to the UK Centre for Ecology & Hydrology (CEH).

    I must stress, this is not Aquaessentials fault, nor is it limited to Aquaessentials; infected moss balls are appearing for sale throughout the UK, EU & US. The fact they have managed to infest, then pass through an entire supply chain undetected gives testament to how resilient and pernicious Zebra Mussels are.

    Everything about my purchase and delivery from Aquaessentials was positive - Would definitely use again for other aqua supplies.

    A
    Andrea G.
    Review

    Came in good condition. Look good in the tank.

    C
    Christina B.
    Review

    Healthy moss balls, however a lot smaller than I anticipated but that was my interpretation, sizing on website is accurate.

    M
    Mark S.
    Review

    Arrived on time and in perfect condition

    L
    Lauren G.
    Review

    Delivery was fast, but the person who packed them didn't close the seal on the plastic bag, so they turned up bone dry. I let them rehydrate for a few days so I could then clean them and add in them with my other Marimo balls (bought elsewhere), and was so shocked to find how unbelievably filthy they were. The water I cleaned them in was dark brown by the time I'd finished. I will absolutely not be putting them anywhere near my other Marimo balls. They have brown patches, which is a symptom of not enough light. They also don't hold a spherical shape, so clearly haven't been moulded often enough whilst being grown. I guess for the price I'm not sure why I expected decent Marimo balls...

    A
    Anita H.
    Review

    Excellent conditions and great quality I attached them onto my mopani wood,to my rainbow stone and I have some of them rolling around ??Very cute and I would recommend ????

    T
    Tracey P.
    Review

    Have had these before & they were great, this batch of 3 has 1 that has brown patches appear

    S
    Sarah S.
    Review

    I am a complete beginner with aquarium plants, and have set up my first planted tank. I knew from the beginning I wanted moss balls in my tank as I have a shrimp and heard they love them.
    My tank is "hobbiton/ lord of the rings" themed and they fit in perfectly!

    R
    Rob V.
    Review

    Looks amazing again top quality

    N
    Nicole N.
    Review

    Very happy, the moss arrived quickly and in excellent condition.

    E
    Emma W.
    Review

    Ordered these in small size as I like to watch them grow. Arrived in great condition and my shrimp are loving them.

    e
    ellie m.
    Review

    Very quick delivery and all Marimo moss balls arrived in great condition, securely packed!

    E
    Emily H.
    Review

    Quick delivery. As described. Fish seem to like them.

    J
    Judith T.
    Review

    Giving 4star rather than 5 only because I had to rinse them quite a few times and really it’s probably as they were on sand.Otherwise I am delighted with these moss balls so much so that I bought 3 more.My daughter is taking 3 of them for her house.

    J
    James B.
    Review

    Arrived in great condition and has settled well into the tank. Item was packaged well and delivery was very quick. It adds a nice bit of colour to the aquarium.

    Common Questions

    Which size should I choose?

    The mini 1cm balls suit nano and shrimp tanks. The 2cm balls work as a foreground grouping in most aquariums. The pack of 20 is the best value for stocking a new tank.

    Do they need CO2 or special lighting?

    No — Marimo grows in low light without CO2 injection.

    They're floating — what do I do?

    A gentle squeeze underwater releases any trapped air and they will sink to the substrate.

    Are they safe for shrimp?

    Yes, fully. Shrimp graze on the surface biofilm constantly and are naturally attracted to Marimo.

    How do I keep them round?

    Roll them gently between your palms at each water change to maintain their spherical shape.