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Old 12-21-2015, 03:58 PM   #1
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Trochus snails dead!

Until about a week ago, I had two Trochus Snails living peaceably in my Nano 29g - also in the tank are a handful of hermit crabs, two black footed trochus two Emerald crabs, three coris, two clownfish, a yellow wrasse, a flasher wrasse, one watchman goby, one fire goby, and assorted corals.

Now, my two large trochus are dead; before the second one died (just overnight last night) I found it lying on the substrate; I placed it against the glass, and it seemed to be extremely weak. This morning, it was dead.

What could have killed my larget, oldest snails? Simultaneous old age?
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Old 12-21-2015, 04:25 PM   #2
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The number one killer of inverts are nitrates. Please check them to make sure they are under control.
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Old 12-21-2015, 04:48 PM   #3
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considering you have more livestock in your 29 nano than I have in my system; 50 gallon display (70 gallons total w/sump & refugium) I think water quality should be the first thing to check.


seriously, your tank is overstocked and will only give you more headaches as the fish get larger.


the yellow wrasse (I assume a coris wrasse) could possibly be suspect because they will pick at snails and stuff.
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Old 12-21-2015, 10:52 PM   #4
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Water was tested before the first death and all chem levels are OK...

The wrasses have been in the tank for well over two months with no problems...

Out of six snails, only these two died...

Is this possible through some other means?

I've done 5g water changes every week...
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Old 12-21-2015, 11:18 PM   #5
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What are the chances the hermits killed them for shells?
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Old 12-21-2015, 11:29 PM   #6
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There's two issues at play if the hermits killed 'em:

1: The first was found dead and the shell is still unoccupied.
2: The second was found alive. Barely.

Any chance an emerald would kill one and fatally injure the second?
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Old 12-24-2015, 01:52 PM   #7
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I put three snails in my tank and my emerald instantly ripped one of them apart. Could be any crab realistically


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Old 12-24-2015, 02:33 PM   #8
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Quote:
Originally Posted by Adamski View Post
I put three snails in my tank and my emerald instantly ripped one of them apart. Could be any crab realistically
Thanks for the additional data point...

I'm taking another water sample to my LFS later today for a new analysis...
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Old 12-24-2015, 08:19 PM   #9
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LFS was closed @ 4:30 or thereabouts; normally open until 8:00 weekdays...so no water analysis. ��

Will try again on Saturday...
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Old 12-24-2015, 08:27 PM   #10
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Maybe it's a saltwater thing, but can't you get a kit to test water chemistry instead of relying on a LFS?
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