The purple non-sulfur bacterium Rhodopseudomonas palustris is recognized as a critical microorganism in the nitrogen and carbon cycle and one of the most common members in wastewater treatment communities. This bacterium is metabolically extremely versatile. It is capable of heterotrophic growth under aerobic and anaerobic conditions. but also able to grow photoautotrophically as well... https://www.bekindtopets.com/mega-grab-SDS3113-High-Tea-Single-6-top-grab/