Losing Emerald Crabs

Particleman

AC Members
Oct 23, 2004
86
0
0
Irvine, CA
Ok I've now lost 2 of my 3 emerald crabs. What could be going on? They've tied about 2 days apart and were fine up till I found them just completly frozen. Now I thought maybe they were molts but alas they are the actual crab carcass. My hermits and snails are doing great, havent lost a one and they were all aclimated using the drip method at the same time. Is there something I should check besides the water? The cycle is definitly complete, since adding the crew and one clown and one sixlined wrasse I have had no spikes after 1 week. Water quality below:

Ph 8.2
Salinity 1.023
Ammonia: 0
Nitrites:0
Nitrates: 15
Temp: 80
Alk: 13 German degrees?

I thought maybe the brittle stars but they are black and I havent seen any agression towards anything.
 
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