Yeah, don't waste the money on a product like that. The problem, then, is what to do about the ick, since you can't put copper into a reef tank and that's the only genuinely effective combatant against ick.
Nayrgaigin...are the fish that have white spots that are in your reef eating? If they are, I guess you ought to try some kind of garlic treatment...I've never tried one so I can't vouch for the effectiveness of garlic, but I have seen that there are people that claim it to be effective.
If the fish stop eating, or even show signs that they aren't as enthusiastic about food as they have always been, it means that it is a real problem and the only really effective thing you can do to treat them is to set up a quarantine tank and put them in there with a copper medication. Some people say that Formalin can be used but I think it's fair to say that copper is the more reliable treatment. Take the measures necessary if it gets to that to set up a quarantine tank in such a way as you don't start a cycle when you put the fish in there.
The thing is, that just because some white spots caused by ick appear on fish in a reef tank doesn't necessarily mean that they even have to be treated. Very often, the fish will be able to fight it off on their own.