Before you start, are you 100% sure that it's ich? This is quite an accurate photo of how it looks: http/www.tails.co.nz/white%20spot%20neon.jpgI've got the white spot treatment so i'm going to put it in tonight (do a 50% change before etc.) when i changes the water to keep the ammonia down should i add more treatment in as i have no choice but to do water changes until my prime arrives as i can't find any right now
I recommend that you do a 90-95% water change (almost "down to the gravel") with temperature matched water before starting the treatment because it will be at least a day during the treatment that you can't do a water change. Also, increase the tank temperature to 28-30 C for the duration of the treatment because the treatment will kill whitespot only in its freeswiming stage of live, so it makes sense to speed up its life cycle.
Which medication do you have? I would probably do 95% water change, treat for ich and repeat every 24 hours (in other words, removing all the medication from the water once per 24 hours by doing water changes). You will need to do one more treatment, followed by a water change, after all the spots are gone.