I have lost all my big to med hermit crabs over the past few weeks,just lost my big one today.
Nitrates 2ppm
ph 8.0
tank is cycled totally
temp goes a bit high lately at 80 deg
this is all i test for at them moment.
These are just common petco variety hermits.The small red legs seem to be ok for now. Its not the mantis that may or may not be there,its obvious when he kills