Ammannia nesaea is a small, marsh dwelling herb from West Africa where it can usually be found growing emersed. This Ammannia species is perhaps one of the most difficult to grow stem plants in the entire hobby. It requires intensive lighting and consistent CO2 levels in the 25-30 ppm range. A disciplined, consistent fertilization regimen including nitrate, phosphate, and iron additions is also likely essential for long term success. For anyone attempting cultivation, moderate nitrate levels and high phosphate levels are suggested. Iron and micronutrient fertilization should be added daily to every other day as per the needs of the aquarium. Substrate fertilization may be beneficial. Hardiness: Very Difficult Light Needed: High Plant Structure: Stem Family: Lythraceae Genus: Ammannia Region: Africa Size: Stem width: 3-5cm Growth Rate: Medium Can Be Grown Emersed: Yes