Plants

Plants are essential for an ecosphere to flourish as they serve as the primary producer of the ecosystem and without them the ecosphere would die. They oxygenate the water and filter out chemicals which occur from the decomposition of organic matter such as ammonia, nitrites and nitrates. They also provide food for nearly all the organisms inside. Most aquarium plants work well in ecospheres but here are a selection of the plants that I know can survive the best in ecospheres (my favourite is Waterthyme (Hydrilla verticillata))

I have noticed that the most successful ecospheres tend to have large amounts of plants so more plants is often better, I would also recommend using at least 2 different plants to add diversity as different plants can fill different niches in your ecosphere.