sick discus-no visible signs

[Rick327]

Hi, yesterday i noticed one of my seventeen discus swimming in an out of the ordinary manner. It was shaky and sometimes out of balance. I then put it in a hospital tank.
The fish color is good and does not seem to have mucus or scars but breathe rapidly. After a night in the hospital tank the fish is lying on the bottom of the tank breathing rapidly.
I did two 50% water changes, one today and another one yesterday. I checked the water parameters and they are fine and all the other discus are doing good.

I don't know what medication i should use so for now i added one tablespoon of aquarium salt for ten gallon in the tank.

95371Any idea what is wrong and what should i do ?

[rickztahone]

Filling out this questionnaire form helps us help you:

Problem

1. Please explain the problems with your fish. When did you notice the problems and did anything unusual happen that you think started them?


2. Symptoms (i.e. turning dark, excess slime, not eating, clamped fins, flashing, darting, clamped gills, white/yellow/green poop, hiding, headstanding or tailstanding, white on tips of fins, rotting or fungus, blisters/white zits on fish, bloated, cloudy eyes, wounds).


3. What medications/ treatments have you already tried and what were the results. Include dosage and duration of treatment.



Tank/Water

4. Tank size and ages, numbers and sizes of fish.


5. Water change regime (What percentage and how often).


6. How long has tank been running? Is it bare bottom? If you have substrate, what type and how deep is it?


7. Do you age your water? If you do for how long and what is the ph swing.


8. Parameters and water source;

Note: Water Parameters are important in diagnosing problems within a tank. If you don't own test kits for the following information, you can purchase them, test your parameters and post this info as soon as possible.


- temp _____

- ph _____

- ammonia reading ____

- nitrite reading ____

- nitrate reading ____

What type of water or combinations of water sources do you use? If it is an RO/tap/well water mix, please list percentages in the mix.

- well water ____

- municipal water ____

- RO water ____


9. Any new fish, plants or inverts added recently.


10. Include any pictures or videos you have which shows the symptoms. If you can't add them to this post, please provide a link to them.

[Rick327]

1. yesterday i noticed one of my seventeen discus swimming in an out of the ordinary manner. It was shaky and sometimes out of balance. I have no idea what caused that, all the fish were fine.

2. Breathing rapidly

3. I put aquarium salt this afternoon in the hospital tank. one tablespoon for ten gallon

4. The tank is 100gal. containing seventeen discus from 3'' to 5''. I bought them 15 months ago.

5. I change 30% of the water every day.

6. The tank has been running for 15 months. The substrate is between 2 and 3 inchs of aquarium gravel.

7. I do not age my water. I use tap water from the city.

8. temp: 28c
ph: 6,8
ammonia: 0
nitrite: 0
nitrate:0
I use 100% municipal water

9. No fish or plants added for at least two months.

10. see picture in first post