Tropical Fish Keeping - Aquarium fish care and resources

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gilly67 07-03-2010 10:42 PM

Help my fish are dying daily!
I have a 120 gallon freshwater tank with
4 small chinese algae eaters ( no more than 1 inch each)
4 red serpea tetras
4 scissortail rasboras
2 danios
6 cory cats
4 mollies
8 swordtails

the tank has been set up for three months,one month without fish, I added 1 swordtail 2 weeks ago, last week my tank got cloudy and I lost 3 swords in one day then 2 more the next day, only the swords have clamped fins and labored swimming patterns.(regretably I cannot post pics)they have lost their color as well. I treated the tank with clout and did a partial water change 24 hours after that, ( that was two days ago) my water tested 10 nitrates: 0 nitrites : 7.2 ph : 0 amonia.hardness was ok and aklinity was ok. As of today the tank is still cloudy and the swords are still the same. Any ideas? Please help.

kitten_penang 07-04-2010 01:47 AM

did you use chemical buffers to create the 7.2 ph?? if you did this might be your problem if ou have a tank with gravel (which im assuming)
Dissolved Constituents - most likely cause of cloudy water in a newly filled tank is a high level of dissolved constituents such as phosphates, silicates, or heavy metals. If you test the water, you'll no doubt find the pH is high (alkaline). In these cases, treating the water with conditioners will often resolve the problem.

Another option, that has many benefits beyond resolving cloudy water, is to use RO (Reverse Osmosis) water. Your local fish shop may sell it, or sell units capable of making RO water.

if thats not your problem.see whether this is :-
Bacterial Blossom - Often cloudy water doesn't appear the instant an aquarium is set up. Instead it appears days, weeks, or even months later. In these cases the cause is usually due to bacterial bloom. As the new aquarium goes through the initial break in cycle, it is not unusual for the water to become cloudy, or at least a little hazy. It will take several weeks to several months to establish bacterial colonies that are able to clear wastes from the water. Over time that cloudiness will resolve itself.

Decaying plants or excess food that remains uneaten can also cause the milky water seen in bacterial bloom. Regardless of the cause, don't panic over bacterial blooms. Keeping the aquarium very clean by removing debris such as decaying plants and uneaten food, vacuuming the gravel regularly, and performing partial water changes, will quickly resolve most cases of bacterial bloom. Cut back feeding to every second or third day, which will cut down on excess food decay.

If there are particles of debris in the water that you are unable to remove via water changes and vacuuming, a flocculent may be used to clear them away. Flocculates cause particles of debris to clump together so they can easily be removed by the filter (be sure to clean your filter so it's working at peak efficiency). Flocculates are generally marketed as water clarifiers, and may be found at your fish shop.

i hope this helps with the cloudy tank problem.

gilly67 07-04-2010 03:13 PM

Thanks for the info, I used Seachem acid buffer to lower the ph from 8.4 to 7.2, but what I forgot to do was add the acid buffer to the water I add from evaporation. so I added some last night and the water cleared up, the swords are still sick but I will try a water change and add some salt to see if it helps.

kitten_penang 07-04-2010 04:38 PM

salt isnt good for scaleless fish.the don't like it.

gilly67 07-05-2010 06:12 PM

I did not know about the salt thanks, I'm glad I didn't us it. Is stresscoat ok?

kitten_penang 07-07-2010 08:11 AM

stress coat is ok =)

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