Datnoid and Arowana Eye Symptoms

[fishkeepercarlo]

Have you tested your water?

No

If yes, what is your ammonia?

NA

If yes, what is your nitrite?

NA

If yes, what is your nitrate?

NA

If I did not test my water...

...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.

Do you do water changes?

Yes

What percentage of water do you change?

21-30%

How frequently do you change your water?

Every week

If I do not change my water...

...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.

Hi all. I just started this hobby last January and I am worried about my siamese datnoid and HBRTG's eyes.

My HBRTG's eyes have suddenly developed green colors behind their eyes and my datnoid's eyes become all whitey/cloudy. I am not sure if my datnoid is blind because when I am feeding it, it does know where the food goes and swallows it. For the HBRTG, the last meal I gave was superworm and it did not eat the whole meal and just took 3/4 of the worm.

I am currently residing in the PH and the weather temperature is around 25-28c. I also kept both fish on a 75-gallon standard size tank with 2 bichirs (albino and tiger) and 2 plecos. My setup has 300w water heater, overtop filter, and oxygen pump.

Any idea on what they could have gotten? I am planning to buy my water tester today to make sure that it is fine too.