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Description
moss ball bonsai tree aquarium Marimo Moss BallMarimo Moss Ball 4 5cm The plant looks just like a ball and from the outside anyone would believe it to be moss but it's actually a spherical alga native to Japan and Northern Europe. Moss balls provide beautiful colour to the aquascape and will help keep nitrates down. They are a firm favourite of shrimps, who will often be found grazing on top and underneath a moss ball. Moss balls are suitable for any tank their slow growth rate of 0. 5cm per year
Marimo Moss Ball 4-5cm
The plant looks just like a ball and from the outside anyone would believe it to be moss -but it's actually a spherical alga native to Japan and Northern Europe.
Moss balls provide beautiful colour to the aquascape and will help keep nitrates down. They are a firm favourite of shrimps, who will often be found grazing on top and underneath a moss ball.
Moss balls are suitable for any tank - their slow growth-rate of 0.5cm per year makes them ideal for small nano and shrimp tanks. Given the right time and conditions, the maximum they will grow to in an aquarium is around the size of a tennis ball.
These moss balls are supplied at a small to medium size, around 2-3" diameter. We vacuum pack our moss balls, so they will arrive small and condensed with most of the water squeezed out. They will expand when introduced into the aquarium to the listed size when fully hydrated. Please be aware of this before you buy or leave feedback.
Caring for your plant
Moss balls require a moderate light source. Ensure moss balls are not kept in direct sunlight or excessive light, otherwise the plant may turn brown and die. Rotate the ball occasionally to ensure even amounts of light. Best kept at temperatures of 22-25 degrees celsius. Freshwater only. Not for use in salt or brackish water.
Cleaning your moss balls
The best way to keep the moss ball clean is to remove from the tank and gently squeeze into a bucket of aquarium water. Squeezing it pushes the murky water out and releasing it draws the cleaner aquarium water back in. If it floats after being put back in the tank it is because it hasn't absorbed water fully yet - it will sink again once it does.
The best way to keep the moss ball clean is to remove from the tank and gently squeeze into a bucket of aquarium water. Squeezing it pushes the murky water out and releasing it draws the cleaner aquarium water back in. If it floats after being put back in the tank it is because it hasn't absorbed water fully yet - it will sink again once it does.
Zebra Mussels in Moss Balls - IMPORTANT PLEASE READ
To address the recent concerns in the media, Zebra Mussels, along with snail eggs, planaria worms and other pests have always found a way to hitchhike onto certain plants– including moss balls – so its always imperative to ensure responsible steps are taken to eradicate them. This isn't something new.
The recently highlighted issues concern only LIVE zebra mussels, which have been classified as invasive in the USA only – there hasn’t yet been a live one reported in the UK, nor any issues of invasiveness, and it’s only live ones that are cause for concern. In the extremely unlikely event that you do ever find a live one, report it to OATA or DEFRA in the UK. Certainly don’t be alarmed if you ever find a dead one, its completely harmless. Moss balls are not banned in the UK.
We use a highly reputable supplier in Holland, who grows all moss balls in a captive environment to minimise the risk. To further reassure our customers, when the moss balls arrive here we freeze them for two hours prior to release, as advised by OATA. This isn’t harmful to the plant, but kills any hitchhiker, including zebra mussels, which may have found its way onto the plant. You can repeat this if desired.
The recently highlighted issues concern only LIVE zebra mussels, which have been classified as invasive in the USA only – there hasn’t yet been a live one reported in the UK, nor any issues of invasiveness, and it’s only live ones that are cause for concern. In the extremely unlikely event that you do ever find a live one, report it to OATA or DEFRA in the UK. Certainly don’t be alarmed if you ever find a dead one, its completely harmless. Moss balls are not banned in the UK.
We use a highly reputable supplier in Holland, who grows all moss balls in a captive environment to minimise the risk. To further reassure our customers, when the moss balls arrive here we freeze them for two hours prior to release, as advised by OATA. This isn’t harmful to the plant, but kills any hitchhiker, including zebra mussels, which may have found its way onto the plant. You can repeat this if desired.
As a rule we do not use copper treatments, but if you are concerned, dip your plants using a copper-based treatment product like ESHA Gastropex which is designed to eradicate pest molluscs, prior to adding to your tank. Please exercise caution using this method if you have any copper-sensitive species in your aquarium, such as shrimp.
If you have any related questions or concerns, please feel free to contact us.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.1 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 4
Fluffy and Nice Omegaverse
Format: Kindle
… this would have made 5 stars but for 2 reasons.
A.) there were quite a few typos; misspelled words, missing quotations, “the his” mistakes, and various signs that maybe a proofread would do good.
B.) the writing was quite textbook. Late blooming omega is struggling with her new self, finds a absurdly wealthy pack of alphas, every thing is almost insta-love but she resists, then decides to love herself and let everyone be happy.
Rian was my favourite (obviously the author’s favourite too because he got the most page time) but I wish we could see more of his CEO side? He went to work maybe ONCE the entire time. Gray was supposed to be the “growly one” but he turned out to be puppy dog. Lucas was a genius brainiac doctor - but also super alpha with an aggressive hindbrain with a breeding k*nk?? And then there was no actual “breeding”??
Spice 3/5 - normally omegaverse books are super high on messy smut but this was tamer.
Romance 3/5 - insta-love that was then resisted because of personal hangup’s
Plot 2/5 - weird paced head hopping, showing the same scene from different POV’s that made me feel like it was 2 steps backward, 1 step forward.
Humour 4/5 - there were a dozen lines that genuinely made me chuckle out loud
Would have been five stars but the lack of proofreading and the predictable plot made me unable to get up to ADORED IT level - four stars is still and official ENJOYED IT, y’all. This isn’t a bad rating. The “Club Heat” has intriguing possibilities so I’m going to give the second one a shot.
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Reviewed in the United States on March 31, 2023
★★★★★ 5
ABSOLUTELY A MUST for Omegaverse Girls!!!
I ABSOLUTELY LOVE Jillian West and her books!!! I’m so happy I already bought book two and now I have to buy the others for the Assurance Security series!!
Not gonna lie Val kind of annoyed me at the beginning but she grew on me!! Her men are chef’s kisses!!! Holt annoys me some but I can let it slide. I already bought part two so I’m going to be reading that in between work phone calls!!!! DON’T TELL MY BOSS 😂😂😂😂
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Reviewed in the United States on September 30, 2025
★★★★★ 4
Baby bumps and bodyguards
Format: Kindle
Dark, emotional, and unexpectedly tender, Not Ready is an omegaverse romance that delivers found family feels, fierce protectiveness, and a very pregnant heroine who refuses to break. Vale’s on the run from a stalker, but lands in the arms of three private security alphas, cue the swoony tension, fake marriage twist, and slow-burn heat.
It’s a little gritty, a little soft, and a whole lot addictive. If you love protective alphas, high stakes, and heroines with quiet strength, this one’s a must-read.
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Strong Omegaverse Comfort and a Attention Grabbing Plot
Format: Kindle
Jillian West never misses when it comes to Omegaverse, and Not Ready is no exception. This story was the perfect blend of cozy comfort and emotional depth while still delivering a strong plot.
Vale is such a powerful heroine, she is strong, capable, and determined but I love that she still allows her pack to love and take care of her. It’s that balance of independence and vulnerability that makes her so relatable.
The relationship dynamics were amazing: Bishop is steadfast and completely head over heels, Mercy is skeptical but protective in his own way, and Holt is the hesitant one whose slow fall is so satisfying to watch unfold.
The romance hits that sweet spot between insta-love and cautious build, keeping me hooked the entire way through. And that ending. Oh my god, the cliffhanger! I need the next book in this duet immediately.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Interesting
Format: Kindle
So I will say I enjoyed the story, for sure had its moments where it dragged but it was a great story. I really liked that omegas picked their alphas/make the pack. Normally the Alphas make it and the omega fits in with them which is great but I enjoyed this new version where all the power basically went to the omega. It was a nice change of pace. I can admit some of the weird bedroom stuff with her being pregnant was odd, it’s really not hard to do stuff when pregnant (I know I’ve had two and it’s normal and even encouraged at the end especially if you want the baby out). But I like the story as a whole and will read the second, I do hope the next one isn’t dragged bc it stopped being action or tense after she met her alphas and I don’t think it was brought up or properly done when they tried to do it. More sweet after she left.
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Reviewed in the United States on November 11, 2024