Portion Size You will receive one Marimo Moss Ball, which is either 1-2cm or 3-4cm. Product information Marimo is a Japanese word which loosely translates to “seaweed ball". However, you may be surprised to learn these are cute moss balls are actually solid balls of algae, not moss. They grow extremely slowly, about 0.5-1cm per year. But in their natural habitats in the northern hemisphere in countires such as Japan, Scotland, and Australia, they can grow up to a massive 15-20cm thick! Another reason to love Marimo moss balls is beautiful legend that surround these moss ball pets. Legend has it that there were once two lovers who desired nothing more than to be together in their hometown of Kyoto. When their love was forbidden, they ran away away but tragically fell into Lake Akan, sinking to the bottom. According to the myth, their hearts turned into Marimo balls and thats why it is a symbol of love and affection today. Quick Stats for Marimo Moss Balls Care Level: Easy Growth Rate: Slow Tank Placement: Foreground; can be tied or glued to rocks or driftwood Lighting Requirement: Thrives in low to medium light Ideal Temperature: 18°C - 28°C pH: 5.8 - 7.5 CO2: Not required Substrate: Not needed Marimo Moss Ball Care Marimo Moss Balls are incredibly easy to care for because they require very little to live. These pet moss balls like indirect sunlight, cool waters and low light environments. Regular water changes (once every 1-2 weeks) are great to freshen the water and provide new oxgyenation to the moss balls. If your marimo moss balls start to turn brown, move the tank or enclosure to a cooler spot with less light for it to recover. For more aquarium plants, click here!