LFS says 12-15 drops per gallon in ph balanced FRESHWATER for 30 secs.... Directions on bottle say 30 drops per gallon FRESHWATER 10-15 minutes ..... I read a post in here 3 Reefs that said 12-15 drops in SALTWATER 10-15 minutes ....... Its for a Xenia that is not a happy camper ...not melted...just not opening for over a week .....Iodine test kit should be here tomorrow .....but I have been running Carbon for 2 months straight...and Skimming pretty heavy....LFS feels I have stripped the iodine from water ....Last water change 20% had no effect ( 1 week ago ) ...all parameters are great. Sound logical ?? and any ideas on the iodine dip ??