First thing - stop listening to your LPS - If it has whiote spots it's most likely ICK. Get into action now!
Here are some things you can do that will not effect the wlefare o your tank or your fish.
1. Get yourself a cleaner shrimp and/or a cleaner goby (these animals thrive on parasites)
2. start soaking your fish food with Garlic (it stinks and hepls coat the fish with a slick coat making it harder for the parasites to attach) - in theory.
3. Feed your fish medicated food the help fight the parasites naturally.
ICH's cycle is sometimes more than 28 days dso you may be fighting this problem for months. Be patient, have faith and watch your fish closely.