Salt bath in a new tank

[Mdv]

Hello I am a newbie to the hobby
I purchased a 5 gallon tank to set up as a hospital tank .
The tank has not gone through a full cycle I have put some good bacteria into this hospital tank via rocks from my other tank .
So my question is : is it safe for me to do a salt bath with one of my mollies without having that tank be fully cycled?
temperature is 77.4
ammonia level is .5 0 P p.m.
Thanks look forward to your expertise

[Delapool]

Is the salt for treatment?

I think it will depend on strength/duration given stress from tank as I think you are hinting at with ammonia levels.

Sea water strength would be risky at a guess although I’ve found fish in normal conditions cope better with salt than I expected.

A minor teaspoon per 5 gallons I would suspect no impact / help prevent nitrite poisoning