Most Fish Have Suddenly Died!
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Most Fish Have Suddenly Died!

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Most Fish Have Suddenly Died!
Old 02-25-2011, 11:35 AM   #1
 
Exclamation Most Fish Have Suddenly Died!

ok i need help with my dads fish tank. its been up and running coming up for year now. most fish survived except a few odd one. we left it for a couple of month , then the other day we brought a few new fish, i think 5 in total. since adding these fish most of my fish have dies only a few have lived and it has all happened since we added the new fish.

i have alway thought it was our filter, since before christmas the tank has been very dirty and has loads of waste on bottonm and bit floating around. my ddad has always said it not the filter that isnt working. i have made a video in a hope one of ypu guys can help me solve this problem.



sorry for my spelling not very good!!!

thanks!!!
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Old 02-25-2011, 11:58 AM   #2
 
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well i see a number of potential issues ... lets start with some questions so we can get a more clear picture of what we are dealing with here...

size of the tank?
population? what fish and how many of each?
last water change?
how much water do you change and how often?

at first glance it appears to me that a few things need to be done
1st - start with a good 50% water change and another in 3 days
2nd - start doing weekly water changes of 20% be sure to gravel vac every other change to get stuff in the substrate
3rd it looks like the tank is over fed go to feeding 1x daily with just a little if using flake go to 1 flake per fish
4th. filter media needs to be rinsed in water change water as it would appear to be clogged and not performing well
5th based on the amount of algae i would also consider your lights - how long are they one? does the tank get direct sun light? what type of lights do you use and what is the Kalvin rating if you know....
last i would start a second filter on this tank as you can never have too much filtration...
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Old 02-25-2011, 12:06 PM   #3
 
Please don't think me rude but that is one dirty tank! Fish tanks need regular water changes to keep them healthy, such as 10-20% each week with fresh water made safe with a water conditioner, they also need a good "hoovering" to suck up all the fish poo and dead stuff that gathers on the bottom. If you think about it a fish tank is nothing more than a fish toilet bowl where they pee and poo and swim around in it, if you don't change some of the water regularily the waste just builds up and up.

However I don't think this is your problem, I think it's got more to do with the new fish you introduced, they probably were carrying a disease and this has spread to your old fish and wiped out your tank. The best thing to do next time is to quarantine the new fish for 2-4 weeks in a separate tank and then if they develop anything it won't affect your existing fish.

In the meantime I would do a good water change (making sure you use a water conditioner) and hoover as this will help and keep a close eye on the fish that survived for any signs of disease and if you see something check back here for some more help.
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Old 02-25-2011, 12:06 PM   #4
 
the tank is 120 liter

there is only 7 fish left aabout 6 have dieds in past week

last water change was sunday
and we change 25% very 2 weeks

we use two light strips i cant tell u any more they came with the tank
01hmyoung is offline   Reply With Quote
Old 02-25-2011, 01:10 PM   #5
 
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Looks like theres a BUNCH of alge in ther also what are your parametors?
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Old 02-26-2011, 07:28 AM   #6
 
Sound almost like Old Tank Syndrome.... as much as I would want to do a water change I would suggest a lot of caution here. A water test really needs to be done.
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Old 03-01-2011, 02:35 PM   #7
 
Not to hijack a thread here, but I am also having a similar situation so maybe you guys an help me with mine as well.

About a year ago I started my 10 gallon tank with 4-5 fish and a sucker fish (plecostamus?). After a few months (maybe only weeks) some of the fish gradually died off and basically over the last year or so it has been just the sucker and a tiger barb. Well, I decided to add about 4 other fish -- a catfish, a regular non-aggressive shark, a balck molly, and another half orange half black fish that I don't know the name of.

Now, I have never had a problem with this tank in terms of algae or anything else. In the summer some of my water evaporates a bit (maybe an inch or so) so I would add new water to fill it back up a bit which seemed to work fine. In the winter, no water is evaporating now, but I continue to put in AquaSafe stuff (1 cap full per week) which is supposed to stablize the ph levels and also reduce frequent waters changes by up to 6 months! (I dont know how true it is but so far it's been working). My water has been crystal clear and I only use the light at night for maybe a few hours at most per day.

With that said, after about two weeks or three weeks, my shark suddenly died. Then, a few hours later, the catfish died. Later that night I noticed my tiger barb, the guy who has been living fine for a year, was struggling and his eyes got puffy and had white rings around them. He didn't make it through the night :( Yet, somehow my black molly and the other fish whose name I don't know are living fine!

I suspect at first the catfish and the shark were not eating food which is why they died -- I have been feeding them flakes (probably over feeding them in fact) wihch the guy at the pet store said was fine. But they were bottom feeders and it didn't seem like they were eating them. I noticed the store had pellets too but I didn't buy them and I wish I had. However, I am not sure this was the problem anyway because then of course the tiger barb died and he was definitely eating the flakes for a year or more.. so... I have no idea.

As I said the other two are completely fine.

I have no idea what the temp of the water is or the ammonia levels and what not. I plan on monitoring this very soon but I am still perplexed as to why some fish can survive and others die all at once.

Any thoughts?

Thanks in advance.
NJDfan1711 is offline   Reply With Quote
Old 03-06-2011, 09:19 PM   #8
 
Quote:
Originally Posted by NJDfan1711 View Post
Not to hijack a thread here, but I am also having a similar situation so maybe you guys an help me with mine as well.

About a year ago I started my 10 gallon tank with 4-5 fish and a sucker fish (plecostamus?). After a few months (maybe only weeks) some of the fish gradually died off and basically over the last year or so it has been just the sucker and a tiger barb. Well, I decided to add about 4 other fish -- a catfish, a regular non-aggressive shark, a balck molly, and another half orange half black fish that I don't know the name of.

Now, I have never had a problem with this tank in terms of algae or anything else. In the summer some of my water evaporates a bit (maybe an inch or so) so I would add new water to fill it back up a bit which seemed to work fine. In the winter, no water is evaporating now, but I continue to put in AquaSafe stuff (1 cap full per week) which is supposed to stablize the ph levels and also reduce frequent waters changes by up to 6 months! (I dont know how true it is but so far it's been working). My water has been crystal clear and I only use the light at night for maybe a few hours at most per day.

With that said, after about two weeks or three weeks, my shark suddenly died. Then, a few hours later, the catfish died. Later that night I noticed my tiger barb, the guy who has been living fine for a year, was struggling and his eyes got puffy and had white rings around them. He didn't make it through the night :( Yet, somehow my black molly and the other fish whose name I don't know are living fine!

I suspect at first the catfish and the shark were not eating food which is why they died -- I have been feeding them flakes (probably over feeding them in fact) wihch the guy at the pet store said was fine. But they were bottom feeders and it didn't seem like they were eating them. I noticed the store had pellets too but I didn't buy them and I wish I had. However, I am not sure this was the problem anyway because then of course the tiger barb died and he was definitely eating the flakes for a year or more.. so... I have no idea.

As I said the other two are completely fine.

I have no idea what the temp of the water is or the ammonia levels and what not. I plan on monitoring this very soon but I am still perplexed as to why some fish can survive and others die all at once.

Any thoughts?

Thanks in advance.
Probably Ammonia poisoning, you are way overstocked. A pleco shouldn't be kept in a 10 gallon tank alone, so any additions would definitely cause problems.
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Old 03-07-2011, 08:02 AM   #9
 
Whoa... what do you mean Pleco's shouldn't be kept in 10 gallon tanks alone? Really? I have had Pleco's in other 10 gallon tanks all my life and known other people with them as well and it's never been a problem.

And going by the general rule of thumb, the Pleco aside, I was using 1 inch per gallon, so if my fish are approx 2" each and I have 5 fish, that would be 10 gallons, which is the size of my tank. Is that not right?

Also, I was told by some people that work at the pet store that you generally only have problems with ammonia if you have goldfish, which I do not. Is that true?

Finally, I did test my water for 5 tests using some strips I bought and it goes as follows:

Nitrites: Pretty much normal
pH: Fairly normal, about 78ish.
Water: Very hard, but nothing I can do about it -- whole county is like that.
Nitrates: EXTREMELY high. 200+. I have started doing frequent water changes as the person at the pet store said that is basically all you can do...there is not really a chemical you can put in to balance it. I also bought a gravel vac to suck up some of the dirt/food/waste from the rocks, but unfortunately there is so much that it stirs up a lot when I go to clean it and I feel it makes it worse.
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Old 03-07-2011, 08:33 AM   #10
 
Quote:
Originally Posted by NJDfan1711 View Post
Whoa... what do you mean Pleco's shouldn't be kept in 10 gallon tanks alone? Really? I have had Pleco's in other 10 gallon tanks all my life and known other people with them as well and it's never been a problem.

And going by the general rule of thumb, the Pleco aside, I was using 1 inch per gallon, so if my fish are approx 2" each and I have 5 fish, that would be 10 gallons, which is the size of my tank. Is that not right?

Also, I was told by some people that work at the pet store that you generally only have problems with ammonia if you have goldfish, which I do not. Is that true?

Finally, I did test my water for 5 tests using some strips I bought and it goes as follows:

Nitrites: Pretty much normal
pH: Fairly normal, about 78ish.
Water: Very hard, but nothing I can do about it -- whole county is like that.
Nitrates: EXTREMELY high. 200+. I have started doing frequent water changes as the person at the pet store said that is basically all you can do...there is not really a chemical you can put in to balance it. I also bought a gravel vac to suck up some of the dirt/food/waste from the rocks, but unfortunately there is so much that it stirs up a lot when I go to clean it and I feel it makes it worse.
Also, I was told by some people that work at the pet store that you generally only have problems with ammonia if you have goldfish, which I do not. Is that true?
False. You have problems with ammonia if you didnt cycle your tank and have anything alive and pooping in there.


Nitrites: Pretty much normal <---Pretty much normal should only be zero, nada, nil.

Nitrates: EXTREMELY high. 200+. I have started doing frequent water changes as the person at the pet store said that is basically all you can do...there is not really a chemical you can put in to balance it. I also bought a gravel vac to suck up some of the dirt/food/waste from the rocks, but unfortunately there is so much that it stirs up a lot when I go to clean it and I feel it makes it worse.
The most messy time for the tank is right after cleaning:P You could help keep nitrates in order with a bunch of fast growing plants actually.If it doesn't come in a liquid form it doesn't mean it does not exist...

good luck!
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