HCA: Hermit Crab Association

So I have a moonglow bulb in a dome lamp and a daytime heat bulb in a regular light fixture i’d say. My lid to my crabitat is wrapped in some layers of saran wrap. I know the dome lamp is supposed to be sitting on top of the lid but is it safe with the saran wrap? If it is safe will it send enough light/heat thru because of the saran wrap? And also any tips on where to place the daytime heat lamp at? They’re both currently sitting in front of the tank and i rotate them between the 12 hours. Heres a picture for reference

The way they are currently set up gives me no problems with the humidity. The humidity is always pretty good with a reading of about 78% right now and 80 degrees.


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The lamp will definately melt the saran wrap. Just some info, sponges in the water harbour bacteria. They should be ditched. How deep is the substrate?

Hermiesguardian wrote:The lamp will definately melt the saran wrap. Just some info, sponges in the water harbour bacteria. They should be ditched. How deep is the substrate?

I’m ordering more substrate off chewy because when I transferred them over to the 40gal the substrate was not deep enough but it was deep enough for their old tank! And what if I clean the sponges frequently? I have those two in the larger bowls so my smaller ones don’t drown?


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Nope, sponges in the water will harbor bacteria, no matter how much you clean them. You can put them in dry for the crabs to much on. You can use rocks in the pools. Or many of us use Rubbermaid type containers with craft mesh/ plastic canvas attached with small zip ties for the crabs to climb in and out.

curlysister wrote:Nope, sponges in the water will harbor bacteria, no matter how much you clean them. You can put them in dry for the crabs to much on. You can use rocks in the pools. Or many of us use Rubbermaid type containers with craft mesh/ plastic canvas attached with small zip ties for the crabs to climb in and out.

Ok i will take them out now and clean them and place them in dry outside of the water bowl for another day. I noticed many of my crabs liked to sit on them in their water bowls so thats why i kept them in there. I will look into buying something / creating something to help with climbing in and out


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Leave them in until you get something for them to climb in and out with! LOL!

curlysister wrote:Leave them in until you get something for them to climb in and out with! LOL!

Okay whoops sorry i got a lil frightened about the bacteria part


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When I used heat lamps, I had ziploc bags on the lid and cut a hole for the light to sit directly on the metal mesh. Didn't lose much humidity, but I may have gotten lucky.

If what you have works for you, I wouldn't change anything unless you don't like it!