Really add 1 hermit crab per gallon???

Dcozine

New Member
Review score
+0 /0 /-0
View Badges
Joined
Nov 1, 2020
Messages
24
Reaction score
18
Review score
+0 /0 /-0
Location
Rochester
Rating - 0%
0   0   0
I have seen several different sources indicate a tank should be stocked with 1 hermit crab per gallon. I have a 125-gallon display tank - 125 hermit crabs seems like overkill. Wouldn't they cover every surface? I could see 25 or 30, perhaps. Should I really be targeting 125?

I would also like to have a variety on my cleanup crew - emerald crabs, various shrimp, starfish, etc. Does the 1 hermit per gallon take into account other inverts?

Please help me understand the recommendation and instances where it may or may not apply, and what other considerations I should take into account when figuring out my overall target hermit crab population.

Thanks!
 
Zoanthids.com

Peter_in_the_city

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Mar 11, 2018
Messages
172
Reaction score
87
Review score
+0 /0 /-0
Rating - 0%
0   0   0
Whatever works for your tank is what you should go for. If you're looking for a great starting point. I'd go to reefcleaners.org and buy a package that is close to your tank size. It looks like they package about 30-ish hermits in their 120 gallon kits.
 
Tidal Gardens

Saltyreef

5000 Club Member
Review score
+1 /0 /-0
View Badges
Joined
Nov 25, 2018
Messages
5,416
Reaction score
4,782
Review score
+1 /0 /-0
Location
Central Coast, California
Rating - 0%
0   0   0
Whatever works for your tank is what you should go for. If you're looking for a great starting point. I'd go to reefcleaners.org and buy a package that is close to your tank size. It looks like they package about 30-ish hermits in their 120 gallon kits.
Reefcleaners didnt recommend any hermits for my custom clean up crew package.

I think unless youre trying to eradicate something specific theyre not needed to a great extent.
 
Top Shelf Aquatics

Zoa_Fanatic

Valuable Member
Review score
+0 /0 /-0
View Badges
Joined
Jun 4, 2020
Messages
1,935
Reaction score
1,306
Review score
+0 /0 /-0
Rating - 0%
0   0   0
I thought it was 1 crab and snail per 10 gal
Which makes a little more sense .

in my 230 I added 20 hermits but think I might have 10 left .
and 6 Mexican turbo snails
You have 6 snails in a 230? I have literally 30 in a biocube 32. Different varieties but they all do fine. No mexican turbos though. Just nassarius, astrea, ans cerith
 

Zoa_Fanatic

Valuable Member
Review score
+0 /0 /-0
View Badges
Joined
Jun 4, 2020
Messages
1,935
Reaction score
1,306
Review score
+0 /0 /-0
Rating - 0%
0   0   0
I would recommend paying a little more and getting scarlet hermits if you do add them. They are the only well behaved ones I have ever had. All the other guys seem to only be after one thing... your snails.
Zebra hermits are too. I hate the blue legs though they eat everyone
 

Rmckoy

5000 Club Member
Review score
+0 /0 /-0
View Badges
Joined
Mar 24, 2013
Messages
6,715
Reaction score
8,413
Review score
+0 /0 /-0
Location
Ontario Canada
Rating - 0%
0   0   0
You have 6 snails in a 230? I have literally 30 in a biocube 32. Different varieties but they all do fine. No mexican turbos though. Just nassarius, astrea, ans cerith
The Mexican turbos I have are the size of crab apples .
Roughly 1.5” dia
 
Tidal Gardens

Fishingandreefing

2500 Club Member
Review score
+0 /0 /-0
View Badges
Joined
Nov 7, 2019
Messages
3,385
Reaction score
1,694
Review score
+0 /0 /-0
Rating - 0%
0   0   0
NO!!!!!!! And don’t even add any hermit crabs either. I wish I did my research or someone told me, hermit crabs will kill all your snails. Get a couple of sifting start, couple conch, maybe 25 of nassarius snails, 15 trocus and 10 turbos, you’re set!
 
CLICK TO VIEW

LegendaryCG

Valuable Member
Review score
+0 /0 /-0
View Badges
Joined
Oct 22, 2019
Messages
2,005
Reaction score
2,664
Review score
+0 /0 /-0
Location
Fond Du Lac, WI
Rating - 0%
0   0   0
Well while I do think the recommended cuc packages are usually sized a little big, a lot of new tanks struggle with algae and the difference between having a succesful reef or quitting in frustration can just be having enough cuc to get you past the uglies.
 

vncvr1982

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Jan 26, 2021
Messages
45
Reaction score
33
Review score
+0 /0 /-0
Location
Vancouver
Rating - 0%
0   0   0
NO!!!!!!! And don’t even add any hermit crabs either. I wish I did my research or someone told me, hermit crabs will kill all your snails. Get a couple of sifting start, couple conch, maybe 25 of nassarius snails, 15 trocus and 10 turbos, you’re set!
Did you offer an assortment of empty shells for your hermits to move into? If you don’t they will kill your snails for their shells. If you have empty shells in the tank they will opt for those and leave your snails alone.
 
Top Shelf Aquatics

Rmckoy

5000 Club Member
Review score
+0 /0 /-0
View Badges
Joined
Mar 24, 2013
Messages
6,715
Reaction score
8,413
Review score
+0 /0 /-0
Location
Ontario Canada
Rating - 0%
0   0   0
Did you offer an assortment of empty shells for your hermits to move into? If you don’t they will kill your snails for their shells. If you have empty shells in the tank they will opt for those and leave your snails alone.
If the snail is close .
Hermits are ruthless and will kill just to try their shell on .
 

sbreefco

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Jul 14, 2015
Messages
60
Reaction score
118
Review score
+0 /0 /-0
Location
New Port Richey, FL
Rating - 0%
0   0   0
You can't really use "x" number of crabs per gallon as different crabs eat different things and get to different sizes, plus every tank is different.
It's 100% true that most clean up crews are oversized, I can't speak for anyone else, but for us, this is because most of the time when people reach out to buy a clean up crew is because they have a problem and need more "help" then they would had they started with a crew.
I always suggest reaching out to your supplier, tell them what you're looking for, they should be glad to help you get exactly what your looking for.
 

How do I get smarter in the hobby?

  • Experiment with reefing

    Votes: 269 57.0%
  • Read books

    Votes: 182 38.6%
  • Subscribe to magazines

    Votes: 79 16.7%
  • Read Reef2Reef

    Votes: 361 76.5%
  • Talk to other reefers

    Votes: 273 57.8%
  • Watch YouTube videos

    Votes: 307 65.0%
  • Listen to podcasts

    Votes: 116 24.6%
  • Other

    Votes: 40 8.5%
Dr. Reefs Quarantined Fish
Top