Blood loss [edit]. Hemorrhaging is broken down into four classes by the American College of Surgeons' advanced trauma life support (ATLS). 1  Class I Hemorrhage involves up to 15% of blood volume. 2  Class II Hemorrhage involves 15-30% of total blood volume. 3  Class III Hemorrhage involves loss of 30-40% of circulating blood volume. 4  Class IV Hemorrhage.
Each day, increase the thermostat setting by 2Â°C (3Â°F or 4Â°F) until you reach 28Â°C (82Â°F). If the newly adopted hermit crabs came from a tank that was already at 28Â°C (82Â°F), then keep the warm end of your tank at 28Â°C (82Â°F) from the first day. Pay attention to the temperature of the cool end.
If you can't -- say you've carried a marine hermit crab home from the beach -- make sure you get him into an appropriate environment right away; saltwater hermit crabs need saltwater to survive. Step 1. Fill your aquarium with saltwater that contains no trace of chlorine, which is deadly to marine hermit crabs. The tank's pH should fall between 8.0 and 8.4, and nitrite and ammonia levels should be undetectable. Aim for a specific gravity of 1.021 to 1.028 and nitrate levels of less than 10 ppm.