Newbie to Hermit Crab Care — Want to Double Check
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Newbie to Hermit Crab Care — Want to Double Check
Hello everyone! Today I just got two new hermit crabs and I want to make sure I give them the best care possible. I’ve already read through a lot of the articles here and they’ve been very helpful, but I want to know from the experienced crabbers here if the following setup is good:
My current setup is a 10 gallon tank, with a metal/wire lid, coconut and sand substrate mix, two pieces of driftwood, 3 bowls (one for food, one for freshwater and one for saltwater), blonde moss and various larger shells for molting.
My house typically stays in the 72-80 range (the later end of that in the summer), do I need a heat lamp and humidity beyond a few splashes of freshwater?
I genuinely appreciate anyone’s help in advance!
My current setup is a 10 gallon tank, with a metal/wire lid, coconut and sand substrate mix, two pieces of driftwood, 3 bowls (one for food, one for freshwater and one for saltwater), blonde moss and various larger shells for molting.
My house typically stays in the 72-80 range (the later end of that in the summer), do I need a heat lamp and humidity beyond a few splashes of freshwater?
I genuinely appreciate anyone’s help in advance!
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Re: Newbie to Hermit Crab Care — Want to Double Check
How deep is the substrate? It should be 2-3 times as deep as your largest crab. Also the humidifty should be above 80% if you are struggling to meet that, i would cover the lid with saran wrap temporarily and then later get a plexiglass ir glass lid to help retain moisture. The temp should be fine but 72 is a but low, i would go for 74 or sometimg a bit higher. Hope this helps a bit 

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Re: Newbie to Hermit Crab Care — Want to Double Check
It’s about 4 inches deep…there may need to be some more substrate.
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Re: Newbie to Hermit Crab Care — Want to Double Check
Should I fix my tank today since I just got the crabs yesterday evening or should I wait? I think I will need to change their food and water this morning…I’m not really sure because I’d rather not disturb them more.
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Re: Newbie to Hermit Crab Care — Want to Double Check
I would change their food and water, but for the substrate make sure they are all above ground before adding more. The lid/saran wrap you can do whenever because you dont really need to disturb the crabs much
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Re: Newbie to Hermit Crab Care — Want to Double Check
Perfect! I did both.Hermitsandplants wrote: ↑Tue May 20, 2025 2:02 pmI would change their food and water, but for the substrate make sure they are all above ground before adding more. The lid/saran wrap you can do whenever because you dont really need to disturb the crabs much
Quick question regarding decor, can hermit crabs be with live plants? Specifically with air plants?
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Re: Newbie to Hermit Crab Care — Want to Double Check
yes! i have lots of plants in my tank. air plants should be good, but sometimes they die. also the crabs might destroy them.
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Re: Newbie to Hermit Crab Care — Want to Double Check
Awesome! What species specifically, or does it matter?Hermitsandplants wrote: ↑Wed May 21, 2025 7:31 amyes! i have lots of plants in my tank. air plants should be good, but sometimes they die. also the crabs might destroy them.
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Re: Newbie to Hermit Crab Care — Want to Double Check
I dont think it matters, but some might do better than others. Im not sure which because i have only kept one in their tank and i am unsure of the type. Sorry
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Re: Newbie to Hermit Crab Care — Want to Double Check
If you haven't already looked at our care sheets, be sure to check them out! There is an entire care sheet about plants and hermit crabs, it is very comprehensive. And tons of other info there too.
You can add more substrate when crabs are underground if you need to, just don't drop it in from a height or pack it down.
What's your current humidity reading?
You can add more substrate when crabs are underground if you need to, just don't drop it in from a height or pack it down.
What's your current humidity reading?
"If there are no dogs in Heaven, then when I die I want to go where they went." -Will Rogers
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Re: Newbie to Hermit Crab Care — Want to Double Check
Thank you! I will find that care sheet and check it outcurlysister wrote: ↑Thu May 22, 2025 10:48 pmIf you haven't already looked at our care sheets, be sure to check them out! There is an entire care sheet about plants and hermit crabs, it is very comprehensive. And tons of other info there too.
You can add more substrate when crabs are underground if you need to, just don't drop it in from a height or pack it down.
What's your current humidity reading?

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Re: Newbie to Hermit Crab Care — Want to Double Check
Sealing up more of the lid, adding moss, adding bubblers in pools, making sure your sub is moistened - these are some ideas to help boost humidity. Also be sure that your hygrometer is accurate (there is a care sheet about how to calibrate it), and that it isn't sitting right up against the wall with the heat mat.
"If there are no dogs in Heaven, then when I die I want to go where they went." -Will Rogers