I bought 3 for all 5 of my hermit crabs.I have 8 now.Ok they may fight but my ones did'nt.If u first buy them they may fight.But it may not happen.
yes although it would be wise to clean and disinfect it first, you don't know why your old crab might have died.
Put your new hermit crab in a bath of distilled water (make sure the water is no higher than the crab's legs) and let him/her crawl around in it for a while. Then, put your crabs back together and see how it goes. If that doesn't work, watch them for a while and maybe give them both baths. That happened to my crabs, but now they like each other.
it depends how big the hermit crab is or the fish bowl
Yes, hermit crabs don't usually fight. You could give the new hermit crab a bath so that it smells the same as the other hermit crab in you tank.
if your hermit crab pinches you put it under cold water
It depends on the hermit crab but I would personally say just to be careful No the big one might hurt or bully the smaller crab.
yes
down the toiliot
no we had over ten hermit crabs in one cage and they were all fine.:) since they are both different sizes you should keep an eye on them but you shouldn't worry because hermit crabs are very social animals.
You should let it mold. It is part of life for a Hermit crab.
If you mean will it kill the crab, no. However the hermit crab probably won't be able to use most toys. Depending on what it is.
Yes, but if your hermit crab starts eating them, take the plants out.