Oh ok
moss balls are purely for decoration. Theyre actually a type of algea that grows extremely slowly, you wouldn't believe it. Some say that they use up extra nutrients in the water, but IMO they don't because they grow too slowly. A lot of people hate them because they can get sucked into the filter, it can have a build up of detritus or other junk, and get messy? I'm not too sure, I've never had a problem with mine. I just like the look of it so it's just 'there' lol oh, people also dislike it because it moves around a lot but I've never had this problem. You could try it for ghost shrimp breeding because shrimp like to graze on it. I hope this wasn't going off topic too much