| Pointing out the erosion that has reached into the sealing ring. This is a good example of why we practically insist on replacing the laterals when performing a media change. If the holes in the laterals elongate enough, the water flows more toward the outer perimiter of the column. This can cause erosion not only on the plate as shown here, but on the outside of the column itself. Attachment: Gasket (3).jpg (Downloaded 16 times)
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