I have had my RSM 250 up and running for 1 week now and on the 1st day after I filled it with Natural Sea Water noticed a 1/4" long fine line about 1" down from the top in glass radius. I can't feel it on the exterior or the interior, it seems to be in the center of the glass. Has anyone else noticed anything in the radius or rounded corner (if you now what I mean) of their RSM?
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