Finally got that salt tank...

Dkh = 10
Phosphate = <.25
Calcium = 420
Nitrate = 0
SG = 1.025
 
Numbers look good. Looking back, your urchin doesn't look like a true long spine but it I could see a nem accidentally getting poked on those (really thought you had a tux). Regardless of what the issue is there isn't anything you can do but just let it be. BT's are fairly hardy when it comes to nems and your looks to have been in good health when you added it. Hope it's just a phase. It takes a while for a nem to be fully acclimated to new water and feeding it too much/often can kind of slow that process down.

You may also consider feeding it smaller mysis than the PE or chopping it up a little more while frozen. Again, probably not the issue itself but smaller foods are going easier to digest.
 
I have been messing around in the tank a lot lately, epoxy-ing down corals so that could maybe be it
 
Well my nem is looking better today. It was open and full this morning, closed around 3 and then kinda half open after. It's gotten darker in color and the tips are pink. I have only fed pellets a few at a time for the clowns so none sank and they didn't take them back to the nem.
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I did get a monti frag though :)
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Here's a neat picture I took of my urchin last night.
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Tank looks good! Nem has good color for sure.
 
Your tank is looking amazing! Glad to see your nem is doing better too :) anyone have a good ID on that urchin? It doesn't look like the LSU's that I'm used to seeing.
 
viridis urchin maybe?
 
no idea what is going on here.....
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I've seen them at stores around here, but they always insist it is a long-spin or pincushion. Almost got one a couple weeks ago but the employee kept insisting it'd destroy corals (well, actually that it'd destroy parts of the rocks, and the corals would be a side-effect). Not that I believed them, but that store uses the "if you won't listen then maybe we shouldn't sell to you" tone pretty quickly. :rofl:

I'm horrible at making IDs but viridis does look about right. Or at least something related.
 
Your echinata either ate or was trying to eat/attack something. They are one of the more aggressive LPS and they can spew their feeders pretty far...

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^Not my pic.
 
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