• Marimo moss ball - 3cm (Set of 2)
  • Marimo moss ball - 3cm (Set of 2)
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Marimo moss ball - 3cm (Set of 2)

Two 3cm Marimo moss balls — compact pair for nano tanks

£5.99
£5.99

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    Quick Facts

    Rating:

    Growth rate: Slow

    Common name:

    Position in Aquarium: Foreground

    Grows up to (cm):

    Portion Size:

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    A set of two 3 cm Marimo moss balls — naturally occurring spherical colonies of Aegagropila linnaei algae (also sold as Chladoflora) with a dense, velvety dark green surface. The 3 cm size is compact enough for nano aquariums and shrimp tanks, and the pair can be placed together as a small natural grouping or separated to different areas of the layout for a more scattered, naturalistic effect.

    Marimo is one of the most genuinely low-maintenance species available. It grows in low light without CO2 injection and tolerates a wide range of temperatures and water conditions. Shrimp actively graze on the surface biofilm and are naturally attracted to these balls. Roll them gently between the palms at each water change to maintain their spherical shape and ensure even light exposure.

    Simply rinse and place in the aquarium — no planting or attachment needed. They sit naturally on the substrate. Suit aquariums from 10 litres upward. If they float after transit, a gentle squeeze underwater releases trapped air and they will sink to the substrate.

    Marimo moss ball - 3cm (Set of 2)

    Information about growing mosses:

    1. Slow growing

    Mosses are well known for being relaltively easy to grow. Due to the fact they are slow growing, it means demands are low. This means less light, less fertilisers and less care.

    2. Not too much light please

    Because all mosses are slow growing, you can't force them to grow quicker. So brighter light and loads of CO2 won't turbo charge them - actually you'll just end up stressing them out. Whilst some will always grow faster than others, mosses take time to get to the stage you want them to be. Patience.

    3. Trimming is beneficial

    Like all plants, mosses need trimming with a shaprt pair of scissors so don't hold back. Avoid them getting leggy, trim them to keep their shape and they will reward you with better growth which is a deeper green and dense.

    Product FAQs

    Helpful details before you buy.

    How big is 3cm?

    Each ball is 3 cm in diameter — roughly the size of a large marble. Compact enough for nano aquariums and effective in groups in larger tanks.

    Do they need CO2 or special lighting?

    No — Marimo grows in low light without CO2 injection. One of the most low-maintenance aquarium species available.

    They're floating — what do I do?

    Marimo can trap air after transit. A gentle squeeze underwater releases the air and they will sink to the substrate.

    Are they safe for shrimp?

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

    How do I keep them round?

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