Did anyone bother to read the links at the beginning of the thread?
http://www.reefs.org/phpBB2/viewtopic.php?p=439155#439155
That is the original thread regarding the treatment for redbugs.
Milbemycin Oxime is the active ingredient in Interceptor. It is a chitin inhibitor which is why it affects crustaceans. It will not affect other non chitonous inverts such as corals.
Following Dustin's methods, this is what has been successful for me to treat for redbugs on any incoming coral for my tank.
The 23mg pill, (containing 23 mgs of MO-the active ingredient) will treat 380 gallons and will be lethal to redbugs at that dosage. Dividing 380 by 23 = 16.5. This translates out to 1 mg of MO can be used to treat 16.5 gallons of water at lethal doses to Redbugs. I have personally gone well over that several times while dipping new corals for my tank. Unfortunately, I dont have exact measurements, but I can state that I have trippled the dose with no ill effects to the coral being treated.
I'm not aware of any dose that will kill redbugs within minutes, due to its mechanism of action. The drug inhibits chitin synthesis. That takes time to affect the redbug. I have also left the coral in the MO laced water for 24 hours with no ill effects to the coral.
My usual course of action on receiving a new coral is to first acclimate it to my tank's conditions. When the pH and temp are similar, I will place the coral into a container of water from my tank, and dose that with Interceptor. I place the container in my sump to allow for temp regulation, and place an airstone in with it to aeriate water and for circulation. After approximately 12 hours, I will change out the water in the container with fresh water from the system, and dose for red flatworms/planaria with Salifert's Flatworm exit. I dose 4 times the reccomended level as thats what I've found works best at killing any planaria. Too small a dose and they can be build up a tolerance to the Flatworm Exit. FE does not affect the coral at all. It will affect bristleworms, flatworms, and snails though. I will usually treat for planaria for 4 hours, unless there are alot of flatworms coming off the coral. The dying planaria will release toxins that will affect your coral. So water changes are important if any are seen floating in the current.
Finally, I will inspect the coral for any signs of Acro Eating Flatworms. If I see any AEFW's or signs of AEFW's, the coral is immediately dipped in a Lugol's iodine solution for 15 minutes. This will kill AEFW's, but is also stressfull on the coral as well. After the dip, the base of the coral is cut off, and the coral is inspected for egg's or any recessed tissue areas. This is where AEFW's will lay eggs, which is also why the base of the coral is cut off.
At the end of that, the coral is glued to a new sterile piece of rock work or into the tanks rockwork, and left alone.
Nick