Fish are having seizure like symptoms then dying off one by one...

SirDanzo33

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Hi.. and thanks for any response.. my tank has been running for over 12 months.. but for some reason.. all my fish are dying off one by one.. with no visible symptoms.. they seem to last about a week in tank then have seizure then hide away n die after dashing around the tank unnaturaly.. all but my blue cheeky goby.. who's super happy.. eats well.. kicks gravel around regularly.. all my cuc are active and feeding everywhere.. my bristle star which is probs 12inches or more from leg tip to leg tip is healthy and all over the rock work.. corals are all healthy and growing well with great colors.. my rbta and gbta are happy feeding and growing.. salinity is as should be at .25 my alk is 8.6 pH 7.8 phosphate 0.0 ca 526 mg 1342 ammo 0.0 No2 0.1 No3 27 im dosing twice daily when this started about two weeks ago or so with polyplab medic in case its a disease.. but no visible symptoms.. ive spoke with lfs.. taken fish corpse to him and he just cant understand it as hes seen my setup and does my water tests weekly.. only other thing ive been dosing is mag.. but always am in small doses.. just lost with it... Any advise appreciated
 

SteveMM62Reef

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Look for a Rusty Magnet, including taking your pumps apart. If you’ve had kids near the Aquarium, look for pennies in the Aquarium, they can disappear into the sand quickly. It’s the Zinc in the Pennies, that cause the problems.
 
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SirDanzo33

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Will have to wait till my next fish does it.. as it was my dwarf lion fish in the last two days.. but didn't video.. and already removed him.. to reduce him killing anything else in frenzy..
 

Tamberav

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So when all inverts are healthy, then it is disease.

Are the fish breathing heavy at all?

There are flukes that are not visible to the naked eye (need a microscope) and velvet can kill without any spots showing.
 
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SirDanzo33

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So when all inverts are healthy, then it is disease.

Are the fish breathing heavy at all?
I had a porcupine puffer and he was.. almost looked like he was hiccupin

g..
 

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Lavey29

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If fish are dying off quickly that indicates disease or water chemistry causing lack of 02. Since they are not gasping for air per your observations it is probably velvet. When did you last add a fish? Do you medically QT fish prior to DT?
 
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SirDanzo33

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If fish are dying off quickly that indicates disease or water chemistry causing lack of 02. Since they are not gasping for air per your observations it is probably velvet. When did you last add a fish? Do you medically QT fish prior to DT?
No.. I buy them off my lfs who has them all qt and in copper solution.. so didn't think I would need too..?
 

vetteguy53081

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I had a porcupine puffer and he was.. almost looked like he was hiccupin

g..
Video does not play.
Are fish eating? Breathing normal or labored?
Please try a you tube version video under bright white intensity of at least 30 seconds

What is age of tank?
 

Tamberav

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No.. I buy them off my lfs who has them all qt and in copper solution.. so didn't think I would need too..?

Well fish have to be theraputic copper for 30 days to treat disease so "being in copper" could mean anything.

Most LFS don't keep fish 30 days nor do they run therapeutic copper, usually they run sub therapeutic, enough to keep disease low but not cured.
 

Tamberav

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Check out the tail fin, looks like you have ich to me

1730134292988.png
 

unclejed

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First blush I would say possible electrical shocking. Short in heater or pump or other equipment that comes in contact with water. Sometimes you can put your finger/hand in the water a feel for low electrical volt.
 

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