Whale... let us start by saying that Dino Nutrients is to dinoflagellates (dinos) as plant food is to plants. If you fail to feed a potted plant it will not suddenly die but instead, over time, will suffer nutrient deficiencies. You can overfeed a plant just as you can overfeed your Dino Sphere. Please...Do not overfeed! Dino Nutrients is composed of nutrient-rich seawater. BioPop recommends feeding your Dino Sphere roughly 10-12ml (1 unit measurement on the bottle) once every 7-10 days. One bottle of Dino Nutrients contains 4 feedings. Dino Nutrients can be purchased in multiple packs from the BioPop website, and stored in a cool dry location for up to 6 months.