Update.
Plants are always the same. I just let Spiky Moss grow and put it on the right side to make a green mass. It's a big clump and stays there even if there's quite strong water flow. This helps to keep it clean.
Plants are always the same. I just let Spiky Moss grow and put it on the right side to make a green mass. It's a big clump and stays there even if there's quite strong water flow. This helps to keep it clean.