Choose Your Age Marimo Mates, Japanese Algae Balls with Kit, alive and slowly growing with Fish Style Bowl
Discover the zen of caring for your very own Authentic Japanese Algae Ball (Aegagropila linnaei)
Each Marimo Mate comes with a unique name and personality profile - because every moss ball deserves its own identity! After your purchase, we’ll send you your new companion’s special details along with shipping information.
What Makes Our Marimo Special?
• Choose Your Marimo’s Age: Select from 0-5 months, 6-12 months, or 8-12 months “exploding”
• Aquarium-grown for optimal health and vitality
• 100% Zebra Mussel Free - certified clean for Oregon and California (certificates available upon request)
• Ethically sourced from our Colorado facility where natural sunlight is always just right
• Complete care guide included to help you become the perfect marimo parent
Your Marimo Care Essentials
Water Care Made Simple
• Use dechlorinated water (filtered, distilled, or tap water left out 24 hours)
• Fresh water change every 1-2 weeks keeps your friend happy
Perfect Lighting
• Thrives in low to moderate indirect light
• Avoid direct sunlight - they prefer the gentle, dim life
• Less demanding than most aquatic plants
Temperature Sweet Spot
• Room temperature is ideal (65-78°F)
• Cooler water lovers - can handle down to 60°F
• No special heating required
Keep Them Rolling
• Gently rotate every few days to maintain that perfect sphere
• Mimics their natural rolling motion in lake currents
• Helps ensure even light exposure
Simple Maintenance
• Rinse gently under cool water if they feel slimy
• Light squeeze cleaning when needed
• Any clean glass container works - no special equipment required
The Marimo Promise
These incredible living spheres can be your companion for decades with minimal care. Growing slowly at just 5mm per year, they’re the ultimate low-maintenance pet that brings peaceful zen energy to any space.
Note: Includes 4” fish-style bowl vessel for your new friend’s home!
Shipped with love from Colorado, where the sun always shines just right for growing happy marimo.
Shipping from United States
Processing time
1-2 business days
Customs and import taxes
Buyers are responsible for any customs and import taxes that may apply. I'm not responsible for delays due to customs.
Payment Options
Returns & Exchanges
I gladly accept cancellations
Frequently Asked Questions
Custom and personalized orders
We are able to complete custom or personalized orders with extra time to create!
If you have your own idea, or want to tweak a current item, just send us a message here on Etsy.
Are your products store bought?
Not here at KnotsbyNobs! We strive to let our originality shine. We believe in using recycled materials whenever possible. And pet rats never seem to care!
However, when it comes to items, such as willow sticks, these are purchased from a qualified pet store.
Why Small Animals?
Rats, Rabbits, Guinea Pigs, Hedge Hogs, Chinchillas, Sugar Gliders, Ferrets, and other small animals are our focus at KnotsbyNobs. As animal lovers, we know small animals have just as big personalities as some of their larger animal companions. Small animals usually spend time in cages, which is why they need extra attention, enrichment, and foraging opportunities to live a healthy life. We make things for small animals, because they can’t do it themselves.
What is your “Raute Couture” line about?
We dedicate one section of our store, to one-of-kind items you can have for your pet. May include comfort items, treats, or toys, but it will all be exclusive. Only the finest for the fanciest.
These special items usually take us several hours or days to complete. Because we know they are going to be for top-shelf buddies.
Gift wrapping and packaging
Are you sending this to someone as a gift? Let us know! And we will make it extra special for you, and include a personal card, too.
Otherwise, we always package each order with love!
How do you determine your prices?
We do as Etsy says! Calculate materials, labor, expenses, profit, and ideas into the cost. We compare our prices to other online shops and mainstream stores. A lot of effort goes into each handmade order, and we appreciate your support! Our goal is to make this our future.
Plus!! We offer free shipping on orders over $25.00.
Reviews (1)
Average:
Jul 11, 2025
Best pet ever. So beautiful! Thank you!
Kyalomé Wintermoon
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