I will fill this out as a general guide as I have 3 crabitats at the moment (+ the iso tank below)...
1. What kind of substrate is used in your tank and how deep is it?
Loose Eco Earth & Quikrete Premium (Washed/Screened) Playsand; I personally have the best success with about a 3:1 ratio of playsand to EE. Yes, it is moistened using dechlorinated tap water via Prime + Instant Ocean brand to sandcastle consistency on initial setup. If need to mist around edges just dechlor tap water. Oh... 12" with the adults, just added a bit more than an inch for the babies to about 7-8".
2. Do you have gauges in the tank to measure temperature and humidity? If so, where are they located and what temperature and humidity do they usually read?
Acurite; generally 74-80 temp with humidity around 80-85% (I have been more cautious here R/T a bacterial bloom when I had limited knowledge/experience and basically soaked the substrate smh + baby group recommendation on humidity). Located in center front of tanks (typically).
3. Is a heat source used in the tank? If so, what?
Yes; UTHs on side (back) of tanks mostly above substrate level, but may be an inch or so below in another tank.
4. What types of water are available (fresh or salt) and how is the water treated (what brands of dechlorinator or salt mix and what ratio is used to mix it)?
Fresh with Prime (tap) & Saltwater with IO (primed tap).
5. What kinds of food do you feed and how often is it replaced?
Purchased foods are mostly from THCP and Mary's Etsy. Calcium/Protein daily + everything else including fresh foods.
6. How long have you had the crab and what species is it, if known?
This specific crab = just over the 1 year mark. PP.
7. Has your crab molted, and how long ago did it happen?
Yes, multiple times (small... has grown a lot though in 1 year!). Last time = maybe a few months ago or so.
8. What type of housing are the crabs kept in, what size is it and what kind of lid is on the housing?
Glass aquarium tanks with screen lid (Saran Wrap). This crab = 55G.
9. How many crabs are in the tank and about how large are they?
55G = This crab was in there with 3 others. This was the 1 small with 2 medium and 1 large. Now in iso.
10. How many extra shells are usually kept in the tank, if any?
When healthy with all 4 in 55G = Between 25-30 shells (mostly turbos) rotated every week or so... too many lol, but I have gotten more creative with placement.
11. Have there been any fumes or chemicals near the crabitat recently?
No.
12. How often do you clean the tank and how?
Spot clean. Just re-did both main tanks and wanted to add sub so no deep clean just spot check dig to the bottom without molters down to smell the sub ha (see above with history of bacterial bloom and it is not fun + the smell is atrocious - FYI = did not smell anything when had pretty bad BB... just noticed some discoloration... then started digging... and the smell ughhh... and the work meh).
I'll sift through the top layer removing what I can then add what I need (I do not add sub or mess with the decor if any crab is molting though I am aware many say an inch every 24 hours CAN be added if necessary for whatever reason). Did this mostly because I finally have SOME time in my life AND with the current circumstances, it seemed like a good time to do this.
13. Are sponges used in the water dish? If so, how are they cleaned?
No.
14. Has anything new been added to your crabitat recently?
After this bizarre behavior to lethargy idk what is going on thing, yes. Not relevant to this crab's condition though.
Spent way too much money on more shells and also purchased a few things from (I totally forget the username(s) here at the moment)... CoenobitaCuriosities on Etsy. Really wanted to have that order since I had planned on adding/changing a few things with current situation and no molters, but the package somehow goes from PA to DC to MD to NJ. Just received a text now that it was delivered when I had just looked at it in NJ locally rescheduled for tomorrow

Yeah so completely side tracked... but... just went and opened the box... awesome!!





15. Is there any other information you would like to share that might be helpful (anything that is regularly part of your crab care, playtime, bathing, etc.)?
If I do, it will likely end up off-topic so I'll pass on this question

16. Please describe the emergency situation in detail.
I apologize as this would typically be an emergency, but it is not a current emergency although that could change with another POV or any insight that I'm just lacking here.
So this year has sucked and I have been working much more recently (longer shifts with less staff and little sleep). I mention this because it was a few weeks ago, maybe about 3 weeks ago, that I noticed some out of the norm behavior from this crab; just out and about during the day, but otherwise nothing else.
Then last week I was watching the WyzeCam after work and observed this crab just hanging in the saltwater for hours which I have seen crabs initially do prior to molting.
After this, he had slowed down considerably day after day. Started getting concerned that I had not seen any digging or attempt to assuming pre-molt. I watched the camera a few nights ago and did not see him at all while the others were 'running' on the wheel... their usual. Thought this was good and that he finally dug down to molt.
I looked in the morning and still didn't see him, but later when changing food/water I noticed him (still in his shell) in a spare turbo shell for the largest with him basically hiding here. I have never seen this crab 'hide' in any of the larger spare shells so started to prep an iso and thought maybe the top layer of sand was just too dry (multiple successful molts without issue so that was all I could think of). This was in the evening so I rush around setting up an iso because something was wrong and the other crabs would be out soon and didn't think just leaving him like that was a good idea.
I end up just completely scooping some of the sub along with the larger shell and the crab in his shell inside of that shell and gently place in iso tank. Turned the camera to face the iso and sure enough he comes out of larger shell and is lethargic, but still eating/drinking. He has gotten worse significantly every day now for about 3 days.
Yesterday when I was adding/changing things in the other tanks he just sat there in a normal sitting type position all day and didn't move from that spot and would not retract into shell as typical with all the outside movement. Last night he kinda chilled in the saltwater until that was completely gone then ate some of the food I have in there and finally went under a coco hut that I had kinda made somewhat of a hole/cave for him (wasn't sure to expect a surface molt or not). I did use the iso that is a little smaller than the 10 gallon tank as everything seemed pre-molt (even if I usually do not notice and they molt when they molt).
The iso has a UTH on the back with about 4" of sandcastle consistency 1:1 substrate using a half dosed saltwater mix. There are 2 larger (shallow) clam shells that he can and has been drinking from as well as walking into the saltwater. Added some spare cholla wood just for more dark/hiding areas and have multiple much smaller clam shells with food + threw in some pieces of a catappa leaf in another area.
I just opened the lid to change the food/water and spot clean some of the mess for fresh foods and it is definitely malodorous in there; odd odor though

I added in most of the same food that I have been using while he's been in iso (+ boiled egg today so that's new). Food: exo mix from Mary's Etsy (anyone lacking calcium/exo mix they all love this stuff) with baby shrimp from there, oyster shell, powdered cuttlebone, some dried pieces of veggies/fruit, coconut shavings, a crushed bug protein mix (THCP), another small clam shell with just the basic diet from THCP, and the boiled egg in small pieces.
I just paused and looked to be sure that's what I added and he is picking at the boiled egg (slowly though and no reaction when I just walked up to check the food I have in there). Just not well at all, but still eating and drinking so I'm at a loss here on what to do now.
Planning on just continuing this for now though. It has been just over a year with at least 3-4 normal molts and significant growth. If anything, things have just gotten better... his typical night is food/water first then miles on the smaller wheel in the 55G.
So, he is either going to end up molting (surface molting?) or dying. I have tossed around a few theories that maybe could be sick and have been practicing isolation type precautions trying not to contaminate the others or the babies in another tank.
The thing is, he has been in that tank with the other 'adult' crabs for a while now with all 4 molting in that tank and it took me some time to notice the 'out and about during the day' as something is wrong behavior... really wasn't until I noticed the slowdown as well as the too long saltwater soak. It really has just been a few days now with him in his current condition and I'm not sure there's much else that I can do, but just wait and see.
As I wrote, this year as a whole has been mostly a disaster over here with me barely taking care of myself... think the one constant that I have kept up with are the crabs. I'll keep an eye on him (via camera) and post any updates.
Thought I might as well post this and get some feedback + contribute to the forum here since it has been a while! I have to vacuum that room in a few and wanted to take out the babies for another measurement/shell size/choice/etc.
With that said, hopefully I can get on FB and start catching up a bit + have been collecting data as I am able to on the babies, but haven't shared at all so that's not really helping anyone either.



Any thoughts on this one?