Gulf Breeze Green Label Artemia has an average Hatch Rate Percent of 70% with an average of 170,000 NPG. We offer both GSL and non-GSL Artemia with this label.With Decapsulation practices, these values can easily increase by 10% (see our “Decapsulation Protocol” in our Tips and Tricks section of this website). GB Green Artemia has the greatest value (least cost/nauplii) when hatchery economics require tighter financial controls.