its true garlic actually helps get rid of white spot. ive had white spot twice in the past, onces just recently and both times the garlic cured it.
I first tried real garlic. I crushed the garlic clove so It was like a mushed up juice and soaked thier flake in it - only downside to this is it makes the water smell really garlicy and can make the room smell of garlic for a few days.
Next I tried garlic casules that you get from healthfood stores or food stores (like asda) or even cheap local shops sell them like savers for about £1. you should get about 60 capsules. the capsule shells can be hard at first but if you leave the lid off the tube for a few days the shell of the capsule will sofen and make it easier to burst open. Burst open the capsule and mix the garlic jelly centre with either marine flake food or seeweed (seaveggies). I find using the seeweed easier becuase you can just rub the garlic into the strips of seeweed. Also when feeding try to turn the tank lights off straight after they have eaten all the food becuase they should go into rest mode and this way they are saving the energy from not swimming for fighting off the infection.
I kept feeding my fish like this for a while becuase if you stop the spots tend to come back, but once you have fed them on this for a good few weeks its should be ok, decrease it and see if it reappears, if so continue feeding with the garlic and seaweed. If it doesnt go away after a few months then something could be wrong with the water, buy an
uv Sterlizer if you dont already have one and try increasing the temperature slightly to speed up the process of the whitespot ( they will fall off the fish in the water once its warmer and thats when they tend to mutate or whateva and then latch back onto other fish - thats when you have an outbreak) but by speeding this process up and allowing them to drop off they become free swimmers and should be passed through the
uv steriler and destroyed. Vitamin supplements can often help as they help the immune system recover
other methods are a non copper treatment which means its safe for invertebrates such as corals shrimps crabs etc.
all i say is just look out for whitespot on other fish before buying them as you could be putting your other fish in danger, as i have learnt in the past
hope this info helps any of you guys who are stuck like i was, Id definately opt for the garlic and seaweed though becuase its the cheapest and most effective way of getting rid of the infection without putting harmful chemicals in the water or needing a hospital tank. plus the fish are getting added vitamins from the seaweed which helps them get better quicker.
anyone got any more tips?
feel free to add to this post

hope this helps