Help fish dying

[smaddox]

Went to bed last night all fish were swimming and doing fine got up this morning had a anthia dead 2 pajama cardinals a clownfish dead a wrass dead my Khole tang is swing and doing fine ammonia is 0 ph 8.1 nitrites 0 nitrates 10 salinity 1.25

 

[aaron23]

picture of your tank would be a good starting point. how is the temp and what changes have you made?

 

[Humblefish]

Need more info: When was the last time you did a water change? Any possibility that a toxin (bug spray, household cleaner) got into the water? As mentioned above, any change you've made to the tank recently (no matter how small) we need to know about.

Also, when was the last fish added to this aquarium? Coral/inverts?

 

[cmac330]

Age of tank?
Size of tank?
When those fish were added?
Temp/equipment?

 

[smaddox]

Added a flame scallop was last change a week ago it's a Red Sea max 250 with a apex monitoring heat and chiller temp runs 78 got 2 next reef reactors running go and carbon

 

[smaddox]

 

[smaddox]

Here's a iPhone pic from this morning

 

[smaddox]

Water changes are done weekly 10% have done anything other than added the flame scallop

 

[Humblefish]

Is the Kole Tang still acting fine? Is he eating?

 

[smaddox]

Yes he is eating off the rock

 

[Humblefish]

Yes he is eating off the rock

I think that sort of rules out any environmental factors, as he should be affected as well if, say, a contaminant had gotten into the water.

That leaves us with a possible disease issue. The only disease I know of which kills so fast, and yet will sometimes leave a sole survivor is Marine Velvet Disease. Read this article and tell me if any of your fish exhibiting any of the symptoms listed before perishing: https://www.reef2reef.com/threads/defeating-marine-velvet-disease.217570/

 

[smaddox]

Found my problem hydrogen sulfate had a spike causing a dramatic decrease in oxygen this for causing the fish to rapidly die some how the tang made it through it

 

[aaron23]

What is the hydrogen sulfate from?

 

[Humblefish]

Are you saying you stirred up your sand bed and released trapped sulfate into the water column?

 

[smaddox]

Well I didn't but a lovely wrasse

 

[Humblefish]

Well I didn't but a lovely wrasse

Typically, hitting a sulfate pocket isn't a concern unless you have a DSB. If it happens, the odor is unmistakable - your water will smell like rotten eggs.

 

[GreatWhiteTang]

Typically, hitting a sulfate pocket isn't a concern unless you have a DSB. If it happens, the odor is unmistakable - your water will smell like rotten eggs.

Yes this ^ these areas appear black in color .. Doubtful a wrasse dove deep enough to hit one .. Has everything seemed to bounce back ? What levels do you get when testing water ?