Need help!! SOS ammonia!!

thanks for the help everybody :)
asked someone at home to do a 50% water change.
I also bought a bottle of API ammolock. will dose with it tonight and continue with water change.
 
asked someone to make another water change earlier. was able to bring down ammonia to .5mg/l . ph at 6.0
problem is my silver aro still not good :( my other aros seems to be lethargic too.
I added API Ammlock already. now can't decide what to do next :( 1 of my black barred silver dollar has developed cloudy eye.

need advice badly since i easily panic :(
Planning to buy API stressZYME. anything else i can do?
btw if ammonia is gone do i have to watch out for nitrite?
not really sure if my tank is cycling again?

btw can i use melafix together with ammolock? my silver aro is shedding slime:( and 1 of my black bar has cloudy eye.
 
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