Most iodine based dips like Tropic Marin and seachem work as far as I know but I have read on different boards in the States that Fluke tabs work the best if you can get them.
Check this link for some good info on dealing with them.
http://www.melevsreef.com/aefw.html
Here is another link that also refers to Melevs link and gives another reefer's experience with them.
http://www.reeffrontiers.com/forums/...ad.php?t=25278