Unsuitable wire cage set up sold by pet stores for hermit crabs

If they truely care, they'll wait. Hermit crabs can become extinct someday because of pet stores.
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If you cannot find any hermit crabs within a reasonable distance, you can go to the best pet store in town and get a hermit crab, as long as they have excellent conditions for the hermit crab you're getting. However, if you buy an animal that can breed in captivity, you’ll be supporting the over population, unless you get to adopt it from the pet store.
Now that you have a general idea of the myths pet stores tell you about hermit crabs you are ready to read up on how to properly care for them!
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Pet stores and boardwalk shops also often do not tell you that you cannot use tap water. This is because the chlorine in tap water can burn the hermit crabs’ modified gills and eventually kill them. You can either buy spring water from the store, or you can dechlorinate it at home using the same stuff you use for dechlorinating fish water, unless the dechlorinator has stress coat in it, which can actually hurt your hermit crabs and is totally unnecessary for your hermit crab. It will not help your hermit crab in any way, because it is designed only to reduce stress for fish by giving it a slime coat. Re-Educate before Rescue! Vanessa Pike-Russell on the importance of educating petstores about proper hermit crab care
Photo provided by FlickrThe problem is, that there are wayyyyyy too many pet stores that do sell them....and they will continue to, whether WE buy those crabs or not.
Photo provided by FlickrHermit Crabs - What the Pet Store Never Told You - Mibba
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Care of the tree crab includes daily feeding and watering. A commercial food from a pet store is sufficient, however you may supplement the diet with fresh fruits and veggies, but you should make sure not to leave un-eaten fruits or veggies in the tank for more than 24 hours. In addition to drinking water, hermit crabs also need to be sprinkled daily with luke warm water to keep them from drying out. Mist from a spray bottle filled with lukewarm water works well. Keep the tank temperature between 70 and 85 degrees Fahrenheit. About once a month you should remove all the gravel from the crabarium, rinse it well without soap and let dry before returning it back to the crabarium; this will remove non eaten food, and waste.The very first thing your new pets will need is a 'crabitat.' Acrabitatis where your hermit crabs will spend most of their time, so choose ahomethat is clean and roomy. A 10-gallon glass aquarium can be purchased ata reasonable price and makes an ideal 'starter home' for your crabs. Ifyou are unable to purchase an aquarium, there are other optionsavailable, such as plastic critter carriers. Keep in mind how manycrabs you ultimately plan on housing and how you would like their hometo look. It will help you make up your mind when the time comes todecide on the size of your crabitat. Make sure the cage will hold yourpets, their food and water dishes, extra shells and climbing toys. Youwant a cage large enough to hold all these things and still have spacefor the crabs to roam if they wish. This means that the smallplastic box that you got from a mall kiosk or boardwalk store is not anadequate shelter for any hermit crab. One way to give the crabsroom to wander is to leave an area at the back or front of the crabitatthat is completely clear of obstructions. This way the crab has an"express lane" to run down if s/he needs to get some energy out anddoesn't want to climb. While a plastic critter carrier makes a passabletemporary home or'hospital cage,' it is not recommended as a permanent home. If you provide your hermit crab with a varied diet of "human grade" food, it should not be necessary to feed them commercial crab food. You can do almost all of your hermit crab food shopping in a regular grocery store. Specialty items you buy from a pet store should be free of unfamiliar ingredients (except for tocopherols, which are natural preservatives). Be sure to examine all labels very carefully and do not purchase any products that contain ethoxyquin or copper sulfate.For example, most people who sell this precious creature do not tell you that you need a humidity gauge. These can be bought at most pet stores and also on the Internet if you prefer. The humidity should be at least 70% for most species of land hermit crab and should not exceed more than 85%, or mold, which can be deadly to your hermit crab, may start growing in your hermit crab’s tank. To raise the humidity, use a spray bottle with dechlorinated water or spring water and mist it whenever the humidity goes does. The humidity requires frequent watching, so be sure to check it a few times per day. Also, a glass top on your tank will be better as opposed to a screen top, because moisture will be able to escape through the screen. Wire cages usually do not hold enough humidity, either, so a glass aquarium, preferably ten gallons or bigger, is best.