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Most owners assume a hermit crab steps halfway out of its shell to use the bathroom, keeping its home clean from the start. The truth is closer to the opposite. Where the waste actually goes first, and how the crab deals with it afterward, explains a lot about why a “clean” tank still needs regular…
Hermit crabs need at least 5 gallons of space per crab. A 10-gallon tank is the realistic minimum to start, even for one or two small crabs. Bigger tanks hold humidity better and allow the deep substrate crabs need for molting. A tank that is too small leads to poor molting, stress, and aggression. How…
Hermit crabs grow slowly, and only when they molt. Young crabs molt often and grow fast. Adults molt just a handful of times a year, so growth nearly stops. Most pet hermit crabs take years to move up even one shell size. What actually speeds that up or slows it down comes down to a…
Most new owners assume a hermit crab tank needs a heat lamp like a reptile tank does. It does not, and using one can quietly harm your crabs. No, hermit crabs do not need a heat lamp. They need a warm tank of 75 to 85 degrees Fahrenheit, but a lamp dries out the humidity…
Cleaning a hermit crab tank comes down to daily spot cleaning and a weekly wash of dishes and glass. Do those two and the tank looks after itself. The deep clean is where most guides go wrong. Tearing a tank down on a schedule is now considered a mistake, and the reason is something living…
Making salt water for hermit crabs takes five minutes and two ingredients: marine salt mix and dechlorinated water. Half a cup per gallon, stirred until clear. The mixing is the easy part. The mistake that actually hurts crabs happens in the shop, before you ever get home, and it comes down to two products that…
Two purple pinchers from the exact same batch can grow into completely different animals. One stays small its whole life. The other outgrows every shell you buy and ends up the size of a baseball. It has nothing to do with luck, and nothing to do with which crab you picked. A handful of fixable…
Hermit crabs do not sip or lap. They collect water using fine hairs on their mouthparts and carry it straight to the mouth, a few small mouthfuls at a time. Filling the shell is a completely different operation, and researchers only worked out how it happens by using see-through shells and dye. How Hermit Crabs…
With proper care, pet hermit crabs live 15 to 25 years, and some pass 40. These are decades-long companions, not short-term pets. Most never get close. The gap between a crab that lives two years and one that lives forty comes down to a handful of tank conditions, and one crab proved exactly how far…
Hermit crabs need shells because their back half never hardens. Unlike true crabs, the abdomen stays soft, curved and completely unprotected, so they move into abandoned snail shells and carry them for life. That dependence runs deeper than protection. A hermit crab pulled out of its shell is not just exposed, it is suffocating, and…
You just spotted something in the tank that looks like a pale, lifeless crab lying beside a shell. Your first thought is that your crab died. Nine times out of ten it did not. What you are looking at has a simple explanation, and there is a ten second test that proves it. Hermit Crab…
If your hermit crab has buried itself and stopped moving, it is almost certainly molting. That is the natural process of shedding an old exoskeleton and growing into a larger one, and it means the crab is healthy and growing. It also means the crab is completely defenceless underground. In the wild, roughly 90 percent…