Luffy Betta Balls : Live Round-Shaped Marimo Plant : Natural Toys for Betta Fish : Aquarium Safe BIG AND BEAUTIFUL ADDITION FOR YOUR BETTA - These LUFFY Betta Balls are beautiful marimos that are a great addition for your betta's tank. They are large, between 1.6 and 2-inches, and add color to your tank. NATURAL BETTA TANK CLEANER - These LUFFY Betta Balls are beautiful marimos that are a great addition for your betta's tank. They are large, between 1.6 and 2-inches, and add color to your tank. TOY FOR YOUR BETTA - Bettas love to move stuff around and LUFFY Betta Balls make the perfect toys for your watery pet. Therefore, not only do they help to keep your betta's environment clean, they also provide them with entertainment. KEEP YOUR BETTAS HOME ALGAE FREE - Since LUFFY Betta Balls absorb many of the same nutrients algae feeds on, they help to prevent unwanted algae from growing in the tank, keeping your betta's environment clean. Have a larger tank for your betta? Add a few more LUFFY Betta Balls. Please note that in one packet, you will receive one LUFFY Betta Ball. EASY MAINTENANCE - LUFFY Betta Balls require practically no maintenance. All they need are some light, fresh water and something to feed off of. Basically, everything you already have in your betta's tank. The only other additional maintenance is that when you change your betta's water, you have to give the Betta Balls a squeeze over a sink or bucket to help remove any built up pollutants. When done, simply toss it back in the tank.