I had my alarm go off today on my 6100's. I took them apart for cleaning and they were full of calcium. When I disassembled it I did not see the o-ring that is in your pictures. I have the newer one piece unit. Is this a problem and how do I go about replacing it? I don't want to harm my units and they are about 1 year old.
Thanks
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Wellington
Current Tank Info: 69 gallon AGE rimless starphire tank in progress...
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