Help. Tank is dying

[zeevelji]

My tank is dying and I don't know why

Last night all my inverts were dead. This morning I found 3 fish dead.

The values of my tank:
Ammonia 0
Nitrites 0
Nitrates 10ppm
Saline 1.025
Calc 490
Magnisium 1297
Alkalinity 12
Temp 78

I thought my testers were wrong so I took my water to my LSF and they said the same.

I've done a 30% water change.
Any ideas? Most of the fish are hiding. My clown is on the verge of death. Most of the corals are open but they haven't fully extended.

 

[Fish Fan]

Sorry to hear about your fish and tank mates. I'm not an expert, but your numbers look fine. I'm doubtful that your ammonia is at zero with all the livestock dying, but you said your LFS confirmed this.

When was this tank started? Did you use live rock and sand, or dry rock and sand?

What are you using for water? Tap water, RODI water, buying water from the LSF?

 

[Idech]

What did you do to your tank before this happened ? Maintenance, dosing, anything ?

Do another WC tomorrow.

 

[Mikeltee]

Do you have an electrical meter? Check the tank for a voltage by placing the red in the water and the black inside the the ground hole of an outlet. That is the only thing that I can think of that would wipe out Inverts and fish. I've had all my fish wiped out by velvet within 24 hours and have had all my fish but one wiped out in 4 hours due to a blue hippo going nuts. In both cases, all Inverts and corals were fine.

 

[Fish Fan]

Do you have an electrical meter? Check the tank for a voltage by placing the red in the water and the black inside the the ground hole of an outlet. That is the only thing that I can think of that would wipe out Inverts and fish. I've had all my fish wiped out by velvet within 24 hours and have had all my fish but one wiped out in 4 hours due to a blue hippo going nuts. In both cases, all Inverts and corals were fine.

I was thinking something like this, a broken heater or something and stray voltage in the water.

Or did you use any kind of cleaner or anything near the tank?

 

[Mikeltee]

I would unplug everything immediately and go out and buy a meter if I was you. Once you aquire Meter, plug everything in and test. If you have voltage, unplug everything ans plug in one at a time. If you need help with this, text me 317-5two6-628l. I'll be up for a few hours. Walmart has them.

 

[jda]

Established tank? New tank?

There is not much that can kill that variety of things that quickly. High temp can do it. Salinity that is WAY off can do it. Maybe a strong oxidizer or medication?

I would think that you could feel the stray current on your hand if it was that. I have been zapped pretty good a few times and inverts and fish were not dying.

 

[CBonito]

I was thinking something like this, a broken heater or something and stray voltage in the water.

Or did you use any kind of cleaner or anything near the tank?

Or did something croak that releases toxins?

 

[Pistondog]

Hasnt the stray voltage thing been debunked?
The fish are not grounded.

 

[Fish Fan]

Or did something croak that releases toxins?

Are you thinking coral toxins?

 

[CBonito]

Are you thinking coral toxins?

I'm thinking anything that could have died and released toxins. What size is your tank?

 

[kaifish]

Run carbon and them check heater and stray voltage

 

[Pistondog]

The only time i had multiple fish die was when a pump failed and oxygen levels plummetted.

 

[thrillreefer]

Add a big bag of carbon in case it’s chemical too. Any cleaners, painting or renovations in the building?

 

[zeevelji]

What did you do to your tank before this happened ? Maintenance, dosing, anything ?

Do another WC tomorrow.

I did a water change with lower salt. I noticed my saline was high, 1.028 so I reduced it to 1.026.

 

[zeevelji]

I did a water change with lower salt. I noticed my saline was high, 1.028 so I reduced it to 1.026.

Haven't dosed anything, same food, nothing different except reduced salt.

 

[zeevelji]

Add a big bag of carbon in case it’s chemical too. Any cleaners, painting or renovations in the building?

I thought maybe it was a contaminate. Added new carbon and GFO. 3 more fish look like they are about to die

 

[zeevelji]

Sorry to hear about your fish and tank mates. I'm not an expert, but your numbers look fine. I'm doubtful that your ammonia is at zero with all the livestock dying, but you said your LFS confirmed this.

When was this tank started? Did you use live rock and sand, or dry rock and sand?

What are you using for water? Tap water, RODI water, buying water from the LSF?

Tank has been running for about 6months. City has really good tap water so I've used it since I started. Had live rock and sand.

 

[zeevelji]

The only time i had multiple fish die was when a pump failed and oxygen levels plummetted.

Pump is working, jist double checked to see the flow.

 

[KC2020]

Sounds like something toxic to the fish contaminated the tank.

Open window nearby ?

Heater hasn't exploded ?

Anything dripping from the tank lights ?