Reef safe hermitcrab species?

[mushy coral]

I just got these hermit crabs from a reefer. There are few halloween hermits which i recognized but these 2 I cant find the id. One looks like a blue legged but its huge, with shell its nearly as big as the tennis ball. The other one has orange legs with a brown line along its legs. Are these 2 reefsafe and can the big one be kept in a tank that gonna have corals kn sand bed? Those coral would be yumas, acans, candy, goniapora and alviopora, maybe few more.

 

[lapin]

When you say reef safe and hermits in the same sentence your going to get varied opinions

 

[Macropharyngodon]

It really depends what you mean by reef safe unfortunately.

 

[mushy coral]

I mean will they eat snails, shrimp or starfish and will they mess up my corals on the sandbed? And do they good at clean the sand or should i consider getting a sea cucumber?

 

[Macropharyngodon]

Yeah, unfortunately snails are a risk as larger hermits like to kill them for their shells. Shrimp also potential prey especially during the molt, and they could for sure irritate or knock over some coral. But... Idk. Its a possibility.

 

[Macropharyngodon]

I mean will they eat snails, shrimp or starfish and will they mess up my corals on the sandbed? And do they good at clean the sand or should i consider getting a sea cucumber?

I think a sea cucumber would be an excellent option.

 

[mushy coral]

I think a sea cucumber would be an excellent option.

Will it be suitable for thick sand bed and compatible with other fish that live under sand like wrasse? And also i have another tank with a thinner sandbed (an inch) will the sea cucumber fit in? And what exact type of sea cucumber should i get for sand cleaning? The one they have here is the yellow sea cucumber that said to be filtering water but not sand, and i havent seen any tiger sea cucumber here at my place

 

[Macropharyngodon]

Will it be suitable for thick sand bed and compatible with other fish that live under sand like wrasse? And also i have another tank with a thinner sandbed (an inch) will the sea cucumber fit in? And what exact type of sea cucumber should i get for sand cleaning? The one they have here is the yellow sea cucumber that said to be filtering water but not sand, and i havent seen any tiger sea cucumber here at my place

I imagine it would be fine with Wrasse. I believe Colochirus robustus has a reputation for being exclusively a filter feeder, while you are going to want a Holothuria genus cucumber for sand cleaning.