Artemia Cysts (Brine Shrimp Eggs) are harvested from salt concentrative pounds or salt lakes. Nauplii hatched from the cysts provide one of nature's finest nutritious foods for tiny shrimp and fish. Hatching Instructions: 1. Use a clear plastic or glass bottle for small quantities. For larger quantities use a 10-55 gal. (38 208 L) fibreglass tank. 2. Use clean sea water or artificial salt water with a specific gravity of 1.01 to 1.02. 3. The optimum pH is 7.5-8.5. If necessary, add an alkaline solution made from soda ash or sodium sulfate to raise the pH. 4. During hatching, use sufficient aeration to keep all eggs in circulation at all times. Pump the air through an airstone to get a smooth flow. 5. The optimum hatching temperature is 28-30 C. 6. Most hatching will occur after 20-36 hours. 7. To harvest, remove the air supply and wait 10-15 minutes. The nauplii will school on the bottom. Siphon them into a fine mesh net using a plastic tube. 8. Store cysts in a cool, dry place. For maximum preservation cysts can be frozen.