| Mike is right (again)
More info about your tap and pond water would be helpful. If the iron content is extremely high additional holding time to allow the water to "breathe" will definitely help if water changes are needed. Even dissolved iron content will oxidize and settle in a holding tank to a certain degree which will partially offset the problem. If the iron content is high enough to discolor your tap water greyish or brownish as Mike mentioned you will be amazed at the amount of oxidized sedimentation in your holding tank. |