Before hitting the pet shop, Land Hermit Crabs suffer a sudden amount of tension. A very abhorrent practice is the collecting and shipment of hermit crabs and the crab's struggle because of it. They then reside in pet shops, that really don't dare to take care of them properly in certain situations. Exhausted out, malnourished and starving, they reached. You buy them then and bring them home. The hermit crab, now seriously mentally and emotionally weakened, would always abandon its shell to end up dying.
There may also be shell wars if there is no choice of suitable types and sizes of additional changing shells in the crabitat for the hermit crab from which to choose. For this with the hermit crabs inside the crabitat, this is usually risky because hermit crabs would just let them be torn apart as opposed to providing up their secure place. This contributes several times to a hermit crab being badly hurt or killed in search of a safe shell by the hostile hermit crab.
There are also occasions when a hermit crab is shell buying and may do anything with his original shell to put another one on and get another tank member take his place. This causes the hermit crab to find a new shell, so it is left destitute if a suitable one is not available.
Someone may have penetrated his shell, and his sensitive belly is irritated. The shell may be rinsed out with dechlorinated water, but this does not help much if anything is stuck within the shell several times. It will also displace anything that may be inside it by heating the shell in dechlorinated water and give it a quick shaking. Within the shell, there may be bugs or a disease affecting his belly and forcing him to abandon the shell.
If the hermit crab becomes too hot, the hermit crab may abandon its shell in an effort to cool off. Monitoring the substrate temperature, as well as the air temperature, is very critical in order to avoid excessive heat. The temperature of the crabitat 's warm limit should be approximately 80-82F. This is almost too hot for most hermit crabs to be stable at 85F or above (some marine species higher temperatures). The temperature of the crabitat 's cool limit should be approximately 72-75F. Hermit crabs are ectothermic species and must have a thermal gradient to be self-regulating.
If the moisture level throughout the crabitat hermit crabs is too low, they behave as though they are choking. They leave their shells in anticipation of relieving pain they feel. If they have been exposed to too dry weather, permanent gill injury occurs. The moisture gauge should be placed near the substrate in the centre of the tank away from water supplies for a more precise moisture percentage reading level, which may influence the reading of the sensors. 70-80 per cent relative humidity is the normal range. Cheap pet-store analogue gauges are seldom reliable.