Here is my 17x20x12 nano aquarium. I have carbon and Zeolites in the overflow and I use large weekly (5g) water changes for nutrient export. It has a coralife 96w pc light fixture and a MJ 1200 is located in the weir/wier? providing a very nice amount of flow in this small aquarium. It will be interesting to see what kind of results I will get with Zeovit and sps in this application.