Crabs keep dying?

vertwake

New member
This morning I pulled out 3 dead hitch hiker crabs. I'm worried maybe something is out of balance and I don't want it to hurt my other livestock...Everything else seems to be ok except my acans didn't do well and I had to move them to a frag tank where they are thriving.

Over the past few months I've probably seen or removed about 8 total dead ones. My tank is 7 months old, I've been trying to remove hitchhiker crabs pretty much the entire time. I've probably removed over 20 total live ones and I know there are at least 5 more little buggers in there.

Readings:
Salinity: 1.025
Temp: 80
Ammonia: 0
Nitrite: 0
Nitrates: 20 <-- This is a little high, usually at 0.
PH: 8.23
Ca: 520
KH: 8 dkh
Phosphate: .25
Mg: 1,150

Should I be concerned, or is there anything I'm overlooking? I still don't know why my acans don't do well in my DT, wondered if it was related to the crab deaths...
 
Maybe the no3 was higher when ur crabs died . Or thats getting hifg from the crabs dieing . Do a water change . Do they die right away or weeks later ?
 
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