Water Quality

[Borngemini]

Hello
I've had my fish tank set up for 2 months
Ph 6.5
Amm 0
Nitite 0 (showing lightest purple lighter than (0.1) with nutrafin Hagen water tester
Nitrate 5
Daily 20% water changes
Add nutrafin aqua plus each change
But my fish just keep constantly getting diseases
In my tank I have some sort of fungus (cotton wool maybe?) buying methylene blue
Internal parasites which I'm going to get some aquarium salt
And this morning they have pop eye !!
Is it bad water quality?

EDIT oh I also have a fish in my second tank with white spot, or ich
What is stressing them out so bad?

 

[Mikey1]

if the tank is cycled, why are you doing daily water changes?

 

[Borngemini]

Yes the tank is cycled and to keep it healthy

 

[the_lock_man]

The water stats are fine. Perhaps the daily water change is too stressful? It's the only thing I can think of. A weekly change is all that's necessary for a cycled tank.

 

[Borngemini]

Okay thanks well I've brought some myxazin shall I bath the fish for 30 mins Or just add to main tank

 

[the_lock_man]

Follow the instructions on the bottle.

 

[Lolly123]

Did you cycle the tank with fish in there? Only reason I ask is that if they were exposed to ammonia and nitrite over long periods of time it may have had an effect on their long term overall health.

 

[Borngemini]

No not these fish I cycled with my mums media that she had set up I had a brand new filter and media I just don't know what's causing stress it's 90 litres I have 8 neons 2 plays and 2 guppies
Could it be pregnancy?