I'm totally agree with "toonces" on his suggestion and definitely understand what you are going through. I'm just a novice to this thing and am already suffered w/ too many things: white spots, bristle worm, and now I see some kind of bugs that I do not know about, and etc.
Since I started to notice the outbreak in my fish tank, I'd found that a few of my fish had white spots on them already. Some of them had only minor spots, but I was freaking out and pretty much moving all of them to a quarantine tank.
My quarantine tank has no substrate in it because I understand that with no substrate in the tank, this parasite won't be able to complete its life cycle and will die out. However, based on my research on the internet, some people suggest that the parasite will still be able to complete its life cycle pretty much on anything even small debris. This claim leaves me hopeless on how to cure my fish.
Anyhow, I'm using the product called ich attack by Kordon. I don't think it is sufficient, but it is only one product available at my LFS.
Based on my experience, I don't recommend you to move your fish that has only minor white spots on them and put into quarantine tank (especially, when your quarantine tank has no substrate). It is very sad for me that I have done that because I have quarantined 6 fish altogether. Some of them were actually looking pretty healthy with white spot before I moved them into quarantine tank. After I placed them in quarantine tank, they were very stress and 4 of them stop eating at all. Unfortunately, I lost 3 of of them. And I can see that I'm about to lose another one of them if I don't put it back to the main tank.
Then I took another approach by giving them a freshwater dip. I really think it helps. I can actually see some white spots drop off the skin. You can give them a freshwater dip every 3 days until the white spot is gone combining with the use of Kick Ich medication, which targets on killing parasite during its swiming stage. Moving fish from one place to another empty place can cause real stress to fish and that's why I lost 3 healthy looking fish. Oh, btw feeding your fish with garlic extract can increase its immune system against disease as well.
I'll be happy to discuss any other ideas that different from me.