Discus darting and not eating

[FrisbeeFish]

Problem

1. Discus has not shown interest in food for two days. It also swims in a stressed manner from one end of the tank to the other and is easily startled.


2. Symptoms: Occasional clamped fins, darting, stressed behaviour. Have not seen any white stringy poop, hiding, or other signs of hex. Discus has not smashed into the glass with its darting or tried to jump.


3. Medications and treatment already tried: The tank has been set at 90F with 500mg Metronidazole per 10g daily for two weeks because I was treating another fish for intestinal flagellates.

Dosed tank with Epsom Salt at 1 tablespoon per 10g when I noticed the fish not eating yesterday evening. All other fish eat well.


Tank/Water

4. Tank size and ages: 90g, four 4", five 3"


5. Water change regime: 90% every two days/50% daily (when able)


6. How long has tank been running: 4 months

- Is it bare bottom: Yes


7. Do you age your water: No


8. Parameters and water source;

- temp 90F

- ph 6.5

- ammonia reading 0

- nitrite reading 0

- nitrate reading 0-5

What type of water or combinations of water sources do you use: municipal water


9. Any new fish, plants or inverts added recently: None


10. Please tell us what you feed your fish and how often. This can be critical information for solving the problem so be as specific as you can.

Feed 3x a day

Cobalt Aquatics Discus Flake
Seachem NutriDiet Discus Flake
Seachem NutriDiet Chorella Flake
New Life Spectrum Discus Pellet
Frozen Bloodworms
Frozen Brine Shrimp
Frozen Mysis Shrimp
Frozen Plankton
Live Blackworms
Homemade Beefheart Mix (beefheart, tilapia, shrimp, spinach, yellow bell pepper, banana, garlic)
Seachem Garlic Guard

11. 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.