2 Clams dead in 4 days!!

[CKreef]

Ok my water test fine.
Ammonia 0
Nitrite 0
Nitrate 10
Calcium 460 mg/L
Phosphates 0
Alkalinity 180
Salinity 1.026
Ph level 8.3

One clam that died is a crocea that was in my tank for at least 10 months. It just shriveled up in its shell over night and died. No signs of pm. The other was a crocea i have had for about two months. The same thing happened to it. There are two other clams in the tank a crocea and a derasa they appear to be fine. Help!!!

 

[ezcompany]

can you list your livestocks, lighting and can you also translate your alkalinity to dkh, i'm not familiar with 180, is that a ppm measurement?

 

[bunkerboy]

what are signs of "pm" mean?

 

[JTEAGUE]

Double Post OOOPPS!!!!

 

[JTEAGUE]

PINCHED MANTLE (PM)

 

[CKreef]

sorry alk is 10
fish tricolor anthias 2 maroon clowns flame angel and 2 yellow watchman gobies I have never seen a single fish go near the clams

 

[ezcompany]

i suspect the flame angel is to blame. have you done anything new to the tank? livestockwise, additives, equipment, etc. (assuming all other things have been the same)

 

[jbittner]

What iis the distance from the clams to the light. T5 are only good for 24" and probably about 12" for clams and high light SPS (IMO)

 

[Bebo77]

i had 10 clams in my tank.. bought one and poof...2 weeks later they were all gone...

 

[Znut Reefer]

Bebo, where did you buy the diseased clam?