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If it's brown it's iron?

No! Here we can see what a client identified as iron in their filter. Brought it in for a look and it was actually calcium carbonate with an iron stain to it. Easy to clean with MultiKleen soaking for less than an hour (5%).

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Karst: Environment and Management of Aquifers

A new book "Karst: Environment and Management of Aquifers" has been published by the Groundwater Project and is available as a free download at:


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