Aquatic Arts 10 Giant Marimo Moss Balls (2" to 2.5", 8-15 Years Old) - Great for Live Fish, Shrimp, and Snails Aquatic Arts is the best rated brand of Marimo on Amazon! Note that our Giant Marimo Balls are 2-2.5 inches, while others call 1.5 inch marimo "Giant". Extremely easy to care for! Marimo can be kept in any freshwater aquarium, terrarium, or even a glass jar. They can even live in tap water with a biweekly water change. No need for special lighting! If you're looking for unique home decor ideas, these marimo are great for indoor decorations! These natural decorative plants also look great as interior centerpieces. Get creative! Build a terrarium kit, use them as gifts, teach children how to keep them as pets, decorate your apartment, office, or patio. Improve the water quality of your aquariums, naturally! Our Marimo Moss Balls are extremely dense and guaranteed to be healthy. These aquatic plants grow slowly, so the moss balls you receive from us are 8 to 15 years old!