HOB filter killed fish or parasite?

[Slammed01]

Hi all! I’m starting to think that it was stagnant water in my HOB filter. What are the odds stagnant water/detritus was released when I pulled my dirty filter cartridge poisoned my fish and not snails?

I lost all my fish at the same time, I feel like a parasite would have effected fish 1 by 1 or noticed symptoms. goby jumped out, tang died and clowns I couldn’t find (crab food).

Had a coral beauty 3 weeks prior and was healthy then after 2 days he developed white spots (not ich, maybe a slime can’t remember honestly) around his eye and a bit on side and was swimming at top so I pulled him. Then I read angels can do that a can come and go.

Just don’t want to leave a fallow tank if I don’t have to!

 

[cancun]

Hi all! I’m starting to think that it was stagnant water in my HOB filter. What are the odds stagnant water/detritus was released when I pulled my dirty filter cartridge poisoned my fish and not snails?

I lost all my fish at the same time, I feel like a parasite would have effected fish 1 by 1 or noticed symptoms. goby jumped out, tang died and clowns I couldn’t find (crab food).

Had a coral beauty 3 weeks prior and was healthy then after 2 days he developed white spots (not ich, maybe a slime can’t remember honestly) around his eye and a bit on side and was swimming at top so I pulled him. Then I read angels can do that a can come and go.

Just don’t want to leave a fallow tank if I don’t have to!

Hmmmmm.... sorry for your losses! Can you provide more info about your tank and maybe pics too? Size, how many fish, what kind of fish, did you QT any of them? I almost have to guess velvet, because velvet kills fish quickly as opposed to other things like ich.

 

[Slammed01]

40B, had 2 clowns, smaller tang can’t remember name and a goby with penguin 350 HOB, 2-Koralia 750s. Been up since December. RODI water and weekly 5 gallon water changes.

When I removed the hob cartridge it seemed to release funk into filter then tank. Actual catridge WASNT that dirty but it clouded display, I just wanted to run with no carbon. Unfortunately no QT, and coral beauty seemed fine and happy a few weeks prior after I bought.

Fish died all at once after the above water change, prior they were eating and happy. Would velvet taken 3 weeks to kill fish?

 

[cancun]

40B, had 2 clowns, smaller tang can’t remember name and a goby with penguin 350 HOB, 2-Koralia 750s. Been up since December. RODI water and weekly 5 gallon water changes.

When I removed the hob cartridge it seemed to release funk into filter then tank. Actual catridge WASNT that dirty but it clouded display, I just wanted to run with no carbon. Unfortunately no QT, and coral beauty seemed fine and happy a few weeks prior after I bought.

Fish died all at once after the above water change, prior they were eating and happy. Would velvet taken 3 weeks to kill fish?

Your display sounds ok....yes velvet can wipe out a whole tank in even less time...read the link below....




https://m.liveaquaria.com/article/84/?aid=84

 

[Slammed01]

Thanks! Yea cB was pulled right when I saw after 2 days of being in the tank. I saw him and got rid of him immediately.

Now a bunch of copepods and an empty tank. Can’t say I saw any symptoms. Tang was playing in flow but kinda common for a tang. Wish there was a dang test!! Can I treat w prazi?

 

[cancun]

Thanks! Yea cB was pulled right when I saw after 2 days of being in the tank. I saw him and got rid of him immediately.

You are more than welcome! I have not experienced velvet first hand, but I know it has wiped out thousand of dollars worth of fish in people's tanks in a very short time!

 

[Maggie321]

Could it have caused an ammonia spike maybe?

 

[cancun]

Thanks! Yea cB was pulled right when I saw after 2 days of being in the tank. I saw him and got rid of him immediately.

Now a bunch of copepods and an empty tank. Can’t say I saw any symptoms. Tang was playing in flow but kinda common for a tang. Wish there was a dang test!! Can I treat w prazi?

Right I totally agree about a test....I wish there were test kits for things like that too. Prazi is more for flukes, you might have to hit the reset button on your tank to make sure it is safe again to add fish. The other person who posted had a good thought be about ammonia poisoning from what the hob released back into the tank....did you do the usual tests to check for that? I apologise if you said that earlier.

 

[cancun]

Here is another good article I stumbled across....

http://reefkeeping.com/issues/2004-07/sp/feature/index.php

 

[Slammed01]

I did do an ammonia test howler it was a day after I noticed so the tang was dead. Would my snails/crabs make it through a ammonia spike?

I was kind of thinking that too, test below—-

 

[Maggie321]

Yea, if that a day later? I point to ammonia.

Toss the HOB. They are terrible. I would run no filter before I would run a hob on a salt tank.

Wait 6 weeks before you add any more fish. Your tank needs time to mature

 

[Maggie321]

How new is this tank? It looks like brand new with those test results. I am guessing here but less than 2 weeks maybe?

 

[Slammed01]

Tanks been up and running for 6 months, only other loss was a clown that went canopy surging after a few months lol. Tank was matured and I waited a month after doing the drvtims method 12/6. . think crap built up or catridge clogged it. I would rather have ammonia than a parasite!


I could do the Molly test for velvet.

 

[Slammed01]

How new is this tank? It looks like brand new with those test results. I am guessing here but less than 2 weeks maybe?

12/6/17 and used dr time ammonium chloride and waited a month to add fish.

 

[Maggie321]

If you have that high of ammonia, you won't have fish ever!. Toss the HOB is my recommendation

 

[cancun]

I did do an ammonia test howler it was a day after I noticed so the tang was dead. Would my snails/crabs make it through a ammonia spike?

I was kind of thinking that too, test below—-

Yea it looks like 5ppm ammonia from the pic, is that correct? Then it might be that, especially loosing all your inverts. I agree toss the hob, and do a very large water change, if you have no live stock in the tank I would do a 75% water change. If you still have live stock, a 50% water change will be ok, then keep testing until that ammonia reads 0.

 

[Maggie321]

And wait to add more fish and do a big water change for the health of the rest of the tank inhabitants. Just friendly advice. Take it or leave it.

 

[cancun]

Yea I agree ammonia is much easier to deal with than a parisite. Maybe whatever was in your hob and released back into the tank caused a mini cycle.....

 

[cancun]

Yea I agree ammonia is much easier to deal with than a parisite. Maybe whatever was in your hob and released back into the tank caused a mini cycle.....

Although I just looked again at your test results and see nitrite is 0....

 

[Maggie321]

Nitrite should be 0
Nitrate can be anything above 0 but below 10ish