It will bring you a peaceful underwater world back into your living spaces and fit for your coffee table, bedstand, bathroom or office desk. Sent as a kit, they are very easy to assemble for great fun. Extremely easy to maintain. These balls can even live in tap water. Please change water every two weeks (more frequently in summer and less often in winter). A small amount of indirect sunlight is appropriate for the item, Do not keep it in direct sunlight for long time. marimo moss ball live marimo moss ball marimo moss live moss balls moss balls aquarium moss ball pet aquarium moss aquarium glass lid moss balls marimo kit real moss balls live pets fish bowls for betta fish fish tank tables for living room ecosystem kit