Set up the Gizmo: Click Return to original settings and Restart. Coral diseases often crop up in reefs that are already stressed by high temperatures, high nutrient levels, or low pH. To model these conditions, select Ocean conditions. Set the Ocean temperature to 29 °C and Ocean pH to 7.7. Then, select Land use and set Agriculture to 50%. Finally, select Disease and set the Black band infection rate and White band infection rate to 100%. Select the SUMMARY tab. What is the current coral stress level?