Hello, does anyone know the procedure for breeding tuxedo and pincushion urchins? I want to use the KCL method, where 0.5 ml of 0.5M potassium chloride is injected into each side of the urchin. Then, the eggs and sperm are collected and the eggs are fertilized. I have only seen it done with variegated and rock boring urchins, and I am wondering if anyone else has done this.