All fishes died

[DDK]

Hello All

My tank was running fine and all of a sudden there was a brown alage bloom.

1. One of my fish died
2. Week later another
3. Then two days after all died
4. Added few settled fishes again from my friends tank they died in hours.

Now I am confused because parameters are correct except low calcium and Alkinity is 7.7

Temperature of water after chiller is 29 degrees.

Now should I restart the whole tank or change water up to 50% and wait for few days

 

[Gumbies R Us]

Couple of questions
What was salinity
Did you notice any signs of disease or stress on your fish? I’m wondering if it could have been an outbreak of some sorts
29c after a chiller? Did you notice your water getting warmer than that?

 

[Mr. Mojo Rising]

How old is your tank? What size tank? How many fish died? Tank pics will help.

 

[DDK]

Couple of questions
What was salinity
Did you notice any signs of disease or stress on your fish? I’m wondering if it could have been an outbreak of some sorts
29c after a chiller? Did you notice your water getting warmer than that?

Salinity was 1.024
No sign of disease as they were eating well healthy and swimming.
Water was warmer to be honest but if was fixed when first fish died but the other died after one week when everything was fine.

 

[DDK]

How old is your tank? What size tank? How many fish died? Tank pics will help.

Tank is around 18 months old and total 12 fishes died and after it I added 10 then they died in hours. Tank size is 6 ft by 3 ft by 3 ft

 

[Mr. Mojo Rising]

Tank is around 18 months old and total 12 fishes died and after it I added 10 then they died in hours. Tank size is 6 ft by 3 ft by 3 ft

You have a big tank, but adding 10 fishes at the same time will overload the biofilter and create ammonia spike which stresses the fish and causes disease and death.

Its not only adding 10 fish, its also feeding those 10 fish, its a double whammy to the system and it was too much. IMO

Now if you are adding a new fish and it dies, it means the disease is still in the tank and the tank should be fishless for the disease to die out.

 

[GARRIGA]

Brown algae bloom might be dinos. If still present then perhaps one of those dedicated groups can help.

Had the same issue of sudden brown water when I changed lights where I doubled intensity and extended duration. Seemed to be the catalyst and my CUC were decimated except for Nassarius. Fish were fine but there are so many strains and my understanding is each has different impacts and some just visually displeasing.

Perhaps retrace everything done prior to the brown algae bloom to hopefully identified what caused it. Dinos exist in all tanks as I understand it but something needs to trigger them to increase in numbers and become a problem.

 

[dschuffert]

I am sad to hear about your loss. It is hard to tell the cause without more information. A comprehensive water test could say a lot. I also wonder if it is possible there was some air contamination, something being sprayed or done in the house that the vapors made it to your tank, etc.

 

[Dburr1014]

Brown algae bloom might be dinos. If still present then perhaps one of those dedicated groups can help.

Had the same issue of sudden brown water when I changed lights where I doubled intensity and extended duration. Seemed to be the catalyst and my CUC were decimated except for Nassarius. Fish were fine but there are so many strains and my understanding is each has different impacts and some just visually displeasing.

Perhaps retrace everything done prior to the brown algae bloom to hopefully identified what caused it. Dinos exist in all tanks as I understand it but something needs to trigger them to increase in numbers and become a problem.

Agreed, dinos can be toxic.

Hello All

My tank was running fine and all of a sudden there was a brown alage bloom.

1. One of my fish died
2. Week later another
3. Then two days after all died
4. Added few settled fishes again from my friends tank they died in hours.

Now I am confused because parameters are correct except low calcium and Alkinity is 7.7

Temperature of water after chiller is 29 degrees.

Now should I restart the whole tank or change water up to 50% and wait for few days

Need a pic of tank and algae. White light so we can see.

How is your flow? Does it break the surface?

 

[DDK]

Agreed, dinos can be toxic.



Need a pic of tank and algae. White light so we can see.

How is your flow? Does it break the surface?

Tank picture I am attaching I can go fish less for 45 days as suggested in one of the thread but in that time what all I have to take care of …

 

[GARRIGA]

Gonna need to do that under white lights.

 

[Dburr1014]

Tank picture I am attaching I can go fish less for 45 days as suggested in one of the thread but in that time what all I have to take care of …

Agreed, dinos can be toxic.



Need a pic of tank and algae. White light so we can see.

How is your flow? Does it break the surface?

Can't see a thing under blue light. I predict it too, lol. ^^^^^

 

[vetteguy53081]

Tank picture I am attaching I can go fish less for 45 days as suggested in one of the thread but in that time what all I have to take care of …

Please repost under white light intensity and a video will be of great help

 

[FindingNem0]

First thing I would do is test ammonia, nirite and nirate.

 

[DDK]

First thing I would do is test ammonia, nirite and nirate.

All three are zero

 

[Dburr1014]

@DDK

Where is the tank pic, not the blue Pic.
Need a WHITE LIGHT picture.
I want to see ripples on the water.
I want to see the brown algae.
I want to actually see your scape.
I want to see how many pumps.

The blue picture, all I see is a blue blob. I can't see anything.

A picture says a thousand words!

 

[Dburr1014]

First thing I would do is test ammonia, nirite and nirate.

Not going to help now, everything is dead.

 

[Dburr1014]

Tank picture I am attaching I can go fish less for 45 days as suggested in one of the thread but in that time what all I have to take care of …

I would say fallow for 75 days.

 

[Dburr1014]

Salinity was 1.024
No sign of disease as they were eating well healthy and swimming.
Water was warmer to be honest but if was fixed when first fish died but the other died after one week when everything was fine.

Are you planning a reef or fish only?
Reef; 1.025/1.026
Fish only; 1.022/1.024

 

[GARRIGA]

Absent identifying what happened and what caused it there’s no guarantee going follow will solve it since dinos will likely persist assuming that’s the culprit.