Marimo Moss Balls For Aquarium 3-4 Year 4-5cm Moss Balls: 5/10/20/50PCS Kokedama Japanese Algae Ball Wholesale3 4 Year 4 5cm Live Moss Ball Pet Kokedama Japanese Algae Ball Marimo Moss Ball Aquarium Plants Squeeze to wash. Trim to shape. Love sunshine and bubbling more than smaller balls. Size Guide: Similar to picking up oranges we use the largest dimension to measure a moss ball. For example, 3cm 4cm moss balls. Once a moss ball's largest dimension reaches 3cm, it will be put into the 2 3 years tank (3 4cm) to let it grow. Some can grow faster from 3cm,