OmegaOmega
Reefing newb
I did a 20% water change yesterday morning but today realized that all my emeralds weren't out in front crawling around. I looked in the back and they were all dead, together.
I had four emerald crabs - two had just molted a week ago - all seemed active and healthy but I'm confused what would have caused their deaths? The sally light foot is still alive and doing fine (even feeding off the dead ones) and the corals and fish appear to be fine to including the featherduster. I've tested and everything came back good as well - my salinity was slightly lower than from before I did the water change, but I think that's just because of evaporation from beforehand since I did not top off.
I would think that the reason they're all bunched together is because that may be a possible dead spot of water movement in the tank, but has anyone seen this before? Is there a disease just crabs can get - if so; why wasn't the sally light foot impacted? Are crabs more sensitive then fish? Are there any dosing items that can kill them? (Magnesium, calcium, etc?)
I had four emerald crabs - two had just molted a week ago - all seemed active and healthy but I'm confused what would have caused their deaths? The sally light foot is still alive and doing fine (even feeding off the dead ones) and the corals and fish appear to be fine to including the featherduster. I've tested and everything came back good as well - my salinity was slightly lower than from before I did the water change, but I think that's just because of evaporation from beforehand since I did not top off.
I would think that the reason they're all bunched together is because that may be a possible dead spot of water movement in the tank, but has anyone seen this before? Is there a disease just crabs can get - if so; why wasn't the sally light foot impacted? Are crabs more sensitive then fish? Are there any dosing items that can kill them? (Magnesium, calcium, etc?)