There is a interesting discusson going on at reef central that states ro/di may not be taking out cloromines and also describes a carbon by caldon that may help too due this. www.reefcentral.com
i dont know, i would think to help people it should be. but again i have no idea....thanks for the info tho!! i should be getting my ro/di unit in a few days and need all the info i can get!