So after careful consideration and fish dying off, I raised the salinity over a few days and put the fish back into the main tank.
However, I wish i would have known, but I bought a cleaner shrimp today, through very helpful advice from a fellow reefer here on RC, that they actually pick the parasites off the fish for them. As we speak, the Sailfin is beside the shrimp and he is picking at him. I also heard the neon Gobies also eat these parasites as well. I will purchase some as soon as I can get my hands on them.
I also hooked up a 15 watt UV sterilizer I purchased today.
The fish are colorful and seem much happier being Home. I believe the quarantine was hard on them, thus losing 2 fish to it.
Thanks for everyone's advice and I am trying the best I can to help these guys make it through this.