Quote Originally Posted by Kenyth
Another good thing to know if using idophor. Sodium Metabisulfate removes iodine stains instantly as well as bleach residue. It also removes chlorine from city water and makes it safe for animals in aquariums. I think it may actually be the active ingredient in the chlorine removal drops for aquariums, but I never got around to checking the labels.
Where would one get this stuff? Is it the active ingredient in any brand name items?

I checked the tap water conditioner I have. No mention of active ingredients...