Classic 110-INT cup overflow

Jul 03, 2019
Tracy Ealy wrote
I have had the Classic 110 skimmer for a month and it has worked flawlessly right our of the box. I dose calcium, alk,magnesium, no pox and sometimes potassium. I did also recently replace a return pump in the sump with the exact same model on other side of sump. I,m not sure if that could effect anything. The skimmer cup has been overflowing for 3 days so I have just left the plug out hoping it would work out was ever was the issue. No luck. I have taken my water level down to 6” in sump which is about 1” covering the skimmer motor and rotated the valve in the full counter clockwise position and it’s still overflowing. The prior month I had the skimmer in 7” of water in the sump and no problems whatsoever. I have read the questions about overflowing cups but none seem to apply except maybe dosing the nopox. Thanks for any help. Tracy
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2 Answers
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Jul 03, 2019
Carlos agent wrote
There are several common reasons a protein skimmer will overflow but the most common is a chemical within the water itself.

Chemical Reaction - Some chemicals react with the air that the skimmer produces and causes the skimmer to over produce foamate. Chemicals known to cause skimmers to overflow are, red slime remover, medications, reef/frag putties (epoxy Putty) frag glues, water conditioners, dechlorinators, stress coat, NEW filter socks, newly mixed salt, bacteria (seeding) additives as well as other dosing medias. In order to remove these chemicals from the water column we suggest that you do several 20% water changes over the period of a month and add a good amount of fresh activated carbon to the system and change out every week till the skimmer has returned to normal operation.
Jul 03, 2019
Tracy Ealy wrote
Thanks. I will give your instructions a try