Need help... Red spot on glofish tetra mouth

Mochica

Recently, my 20 gallon tank with 6 adult glofish tetra had an ich outbreak. They only had a few spots and they recovered within days (with only heat and salt). BUT... I also had some fry in the breeder box in the same tank. The fry did well in the beginning but the ich got worse and they all died. The last few days of their lives, I noticed more bumps on the fry and they looked more fuzzy and some had swollen lips. Even the healthiest fry all got infected and died.
I thought they only had ich, but looking back, I realized it could be secondary infections.
Anyway, the last few fry died on April 1st. On April 4th, I noticed a red streak/spot on the lower lip of the blue glofish. The lip still looked transparent but it had a small red streak (like blood streak) on it. The tank was treated with salt because of ich so I left it alone thinking it would get better. It did get better for a bit but the lower lip looks a bit swollen and it got worse today. I started putting melafix in the tank yesterday. Oh and I also notice white fuzz on my Java moss after melafix.
6 days in and only the blue glofish has a red swollen lip.
I don't have a test kit so I don't know the water parameter but I do change the water often, especially during and after ich. 4-6 times a week. Normally once a week.
Does anyone know what caused the red swollen lip? I googled a bunch of stuff but not 100 sure. Not sure if I need antibiotics.
I included some pics, hopefully that helps.
The first pic is before, second pic is the first day she got it, the rest is from today.
 

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