How to setup an aquarium that Marimo rolls

1: Prepare a spherical aquarium. 2: Spread gravel in the aquarium to increase the flat area. 3: Pour water while being careful not to make unevenness. 4: Secure the water pump with a clothespin. 5: Put all Marimo in the aquarium. 6: If you adjust the water pump well, the marimo can roll for a long time. Please enjoy rolling Marimo! #marimo #mossball #aquarium