The size of Tropical Marine Power Coral Food SPS Powder (1-250m) allows for feeding non-photosynthetic corals, soft corals, SPS corals and other filter feeders such as sponges, tunicates etc. Thanks to the advanced technology used for production, the food is characterized with a broad range of particle sizes (1-550m), where more than 80% are particles of 1-250m. Most of the corals found in aquaria have a symbiotic relationship with algae (zooxanthellae). Photosynthesis carried out by zooxanthellae, requires access to light. The sugars produced as a result are a perfect source of energy for the corals. However, in order to grow corals need other nutrients, which they derive heterotrophically by sieving out phyto- and zooplankton and organic substances dissolved in the marine water. In the tank it is MARINE POWER CORAL FOOD SPS POWDER which provides all these necessary nutrients.Its rich formula includes:microalgae (Spirulina platensis 7%, Chlorella vulgaris 4%)marine macroalgae (A