Adding a SubstrateSource Brazilian Pennywort (Hydrocotyle leucocephala) to your freshwater aquarium helps create a natural look for your tank. As it grows, this plant helps purify your water by absorbing nitrate nutrients. Each bunch includes 4 stems that can be grown with moderate light, either fully or partially submersed (just make sure the root portion is under water). Happy planting! NOTE: Never release plant species into the wild. Before discarding excess growth, allow the plants to fully dry. Photo depicts sample plant, not the actual plant you will receive. Some discoloration may occur during shipping due to the absence of light during transit.