Horseshoe crab: Will it wipe out my copepods? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 4 Old 09-11-2008, 12:44 AM Thread Starter
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Horseshoe crab: Will it wipe out my copepods?

I'm looking for a good sand sifter, but also want something that won't eat copepods, or at least wipe out a possible copepod population... In a few months I'm looking to get a Green Mandarin, so I'm working on a copepod population for my 44gal tank.

While at one of my LFS's, I noticed they had about 10 horseshoe crabs running around a tank, each being about 1 1/2 inches long, and was interested in getting one, so I decided to research. To my delight, I found LiveAquaria states "When small, they are very efficient scavengers and are great for aerating and maintaining sand beds.", they are reef safe, easy to care for, and minimum stated size tank is 30gal.
Then I thought: "If he aerates my sand, he might eat all copepods that might be living in there", which is the reason I haven't bought any orange-spotted-gobies.

Although, could I, instead, seed the refugium with a Reef Pod or two to grow the copepod population, and still go with the horseshoe crab? (I'll have to return my pinfish to the lagoon though, as he might eat the copepods)
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post #2 of 4 Old 09-11-2008, 01:43 AM
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im not sure if a horseshoe would eat the copepods.. but im pretty sure they need an open surface of sand to be happy.. that means even tho you have a 44gal and if you have live rock in the way he wont have room to roam ( i could be wrong but makes sense to me )

why not go with some nassarius snails and/or sandshifting star?
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post #3 of 4 Old 09-16-2008, 05:20 PM
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You also will only be able to keep the horse shoe if you bought a small one about 2 years they molt every 9 months and get like 50% bigger each time. They will eat smaller critters in the sand including worms and copepods if I remeber correctly.
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post #4 of 4 Old 10-01-2008, 09:40 PM
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they can grow to be the size of a garbage can lid so I would have a plan for it when it gets big not trying to scare you but you need to though research and really think about the future of these animals

love it hate it your still addicted to it :)
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