Fake will be fine.
Dont do anything to try and save the fry otherwise you will be overrun before you know it.
Every female in your tank will give birth every month and the older they get the more fry too.
Even if you rehome your males you will still have to deal with fry for the next 6+...
Welcome to fishlore.
A few quick questions first of what size is your tank, second are you cleaning your filter when doing water changes or changing media and lastly what are the exact numbers for you water parameters before a water change.
Personally i dont really like it and think its way overused and overprescribed.
Water hardiness can be raised without salt and ive never needed it to treat parasites or the like with salt.
Ich seems to be the biggest reason i see for treating with salt but ive never had any trouble with...