Red-Eared Sliders Please help

by Ethel
(singapore)

I bought 2 RES about 6 months ago. They should be less than a year old and are still pretty tiny in size.

Terrapin A has about 4 white spots on its shell. I did some research and it says those are fungal or bacteria infection. is it true? how do I treat that??
Terrapin A also has these pink discolouring on its carapace..what are those and how do I treat it too??
He is eating well and very active still.

Terrapin B suffers from swollen eyes. He keeps them closed and opens them only when i put him under direct sunlight to bask. He 'awakes' once a day to eat. after which goes back to sleep. He is generally shy and quiet.

I come from Singapore and its a small country. We dont have many vets who really know how to treat turtles and tortises etc. All I can rely on is online self research and trial and error. The types of products such as vitamins and food are also limited here.

I feed my RES XO brand pellets, dried blood worms, dried shrimps. Recently, I added calcium block and Hobo brand liquid vitamin and eyes cleaner for terrapin B. All these products are bought over the shelf. I try to sun them as much as I can over the window ledge and change their tank water 1 or 2 times a day with added anti-chlorine. I have also tried adding salt into their water and keeping them in warm water.

None of the conditions have improved over the last 2-3 weeks.
Should i try things like, vinegar? antifungal cream?


Thank you so much for your time, I really really appreciate it if you could provide some solutions and answers for me..