My fish are dead

[40g Nano]

A window cleaner

 

[Reefer1978]

I'll agree with it definitely not being phosphate. As someone else said, your corals would be dead dead dead by the time it could get high enough to harm fish.

Fishy chemicals of concern: salt concentration, ammonia, nitrite, nitrate (not as much this one), or some other toxic pollutant, such as spraying cleaning solutions near the tank, but again, corals tend to be more sensitive than fish for most of those things.

Not all life reacts the same to all chemicals. Coral can take bleach much more then fish can as an example.

 

[Reefer1978]

A window cleaner

This could deff be a potential issue. Fritz makes an aquarium safe window cleaner that doesn't have the same harsh chemicals.

 

[40g Nano]

None should’ve gotten into the tank though


I sprayed it a few feet away

 

[Bleigh]

I cleaned the glass but sprayed on a towel and then wiped

When did you do that and what did you use? Again, I would expect your corals to look worse sooner than the fish if that was the issue. It wouldn't hurt to throw some carbon in if you do think that may be part of it.

There's so many potential variables. If you are burning candles, it could increase CO2, causing a ph dip. again, I'd expect to see it in corals. The fact that it was just the fish I think points more to oxygen, parasite, or ammonia, but I'm just spit balling.

 

[Reefer1978]

None should’ve gotten into the tank though


I sprayed it a few feet away

We are only guessing at this point.... but this is another clue in the puzzle. Like other's have said in the thread, we may never reach a full answer. But there are many things at plan in reef-keeping.

 

[40g Nano]

I have carbon in the tank

 

[Reefer1978]

I have carbon in the tank

Carbon is not a magic fix-all.

 

[Bleigh]

I have carbon in the tank

When did you last replace it?

 

[40g Nano]

I have it in my filter and it was replaced like a week ago

 

[Bleigh]

I have it in my filter and it was replaced like a week ago

It can deplete pretty rapidly. For the future, if you do suspect a contaminant, you can throw in a new bag of carbon in to try to soak it up. Even though I run a carbon reactor, I keep some in a bag ready to go cause I have a crazy wild 6 year old boy who sometimes decides to throw random things. It has never actually been a concern, but I could just imagine him deciding to throw a bath bomb and it landing in the tank or something else crazy like that.

 

[40g Nano]

Phosphate is at 0
Alkalinity at 8
Salinity at 1.024
I don’t know what happened

 

[LeftyReefer]

Could it be phosphate?

I'm not shocked your tang in the nano didn't make it.

My corals are wide open would salinity affect them

I'm more shocked your corals have.


Folks here are very helpful, and very, very, very kind.
good luck with your nano and new 40b!

 

[40g Nano]

Thanks but I don’t know why the fish are dead, coral are good, and parameters are fine

 

[schuby]

Short of autopsying your fish, we'll never know the actual reason they died. The leading suggestion on this thread seems to be lack of oxygen.

 

[CrazyCarlitos]

My vote is lack of oxygen in the small tank during the night.

No power outage over-night?

ur return pump operating normally?

don’t give up.

Take ur time to re-stock. Good luck.

 

[kev.2013]

Phosphate is at 0
Alkalinity at 8
Salinity at 1.024
I don’t know what happened

Poor QT practice and stress.

I don’t know why this isn’t obvious. You posted about your clowns having Ich not long ago.

You had issues with your clowns, you tried to QT them, and then put them back into the display too quickly. You then added a tang to a 14g AIO cube.

the combination of this, is most likely what killed your fish. That is, if the other readings you provided are correct and accurate.

I mentioned It earlier, but you need to re-research how to keep a reef tank!

Don’t take this as offense, but it doesn’t seem like you know what you’re doing and that you’re trying to find an excuse to blame these deaths on.

 

[ThePurple12]

From what I understand, the fish weren't showing any symptoms or behaving abnormally.

Poor QT practice and stress.

I don’t know why this isn’t obvious. You posted about your clowns having Ich not long ago.

You had issues with your clowns, you tried to QT them, and then put them back into the display too quickly. You then added a tang to a 14g AIO cube.

the combination of this, is most likely what killed your fish. That is, if the other readings you provided are correct and accurate.

I mentioned It earlier, but you need to re-research how to keep a reef tank!

Don’t take this as offense, but it doesn’t seem like you know what you’re doing and that you’re trying to find an excuse to blame these deaths on.

 

[40g Nano]

The fish didn’t have ich I thought it was that before and I panicked

Return is acting normal and no outage

 

[40g Nano]

Anyone know how to do an autopsy