Size of hermit crab aquarium
To keep a marine hermit crab, you will need an aquarium that is at least 10 gallons large. Taller can be better than longer because marine hermit crabs love to climb on rocks so make sure to put some rock in your aquarium. Try to provide around 1-2 pounds of live rock or coral per gallon of water volume. Hermits also prefer some kind of substrate where they can dig around in so either use sand or crushed coral.
hermit crab diet
Asking yourself what do saltwater hermit crabs eat? Most often found in the aquarium hobby, species like the Dwarf Blue Leg Hermit Crab and Halloween hermit crab, also known as the Electric Orange Hermit Crab are omnivorous species. They will eat mostly different type of algae like green hair algae and cyanobacteria, but in case of insufficient algae in your aquarium they can be fed dried seaweed, pellets or some meaty foods.
Most omnivorous species will love some meaty foods like krill, popcorn shrimps or mysis from time to time. These can be frozen, pellets or fresh variants. The dwarf species will often be content with a menu existing of algae and dried seaweed only, but definitely enjoy some meaty foods as well.
Many other species like the Red Tip Hermit Crab, Dwarf Yellow Tip Hermit Crab and Dwarf Zebra Hermit Crab are herbivorous species and mainly eat algae but can also be fed dried seaweed in case of insufficient algae.
Hermit crabs and live rock
When watching your aquarium, you can often see your hermit crabs plucking your live rock but not everything they pluck of your live rock is eaten. After eating, hermits will send a part of it back into the water column in a plume of debris and will re-establish elsewhere. That is, if the nutrients allowing it to grow aren’t eliminated by your filtration system.
saltwater hermit crab size
There are many sizes of hermit crabs for sale including marine hermit crabs. The dwarf species like the Dwarf Blue Leg Hermit Crab, Dwarf Red Tip Hermit Crab, Dwarf Yellow Tip Hermit Crab or Dwarf Zebra Hermit Crab can grow up to 1 inch. Other species like the Electric Blue Hermit Crab and Electric Halloween Orange Hermit Crab for sale can grow up to 2 inches.