Protein Skimmer Question

I only turn mine off when I am doing a water change (and that's because the water level in the sump increases so much that the skimmer would overflow when the main pump is turned off).

Every once in a while, I clean it during a water change.
 
24-7
It continues to remove DOC, adds to water movement and the exchange of gases.
Only turn off for maintenance...
 
I've found skimmer pumps in general to be happier (read run better/more consistently with less issues) when kept on as much as possible.
 
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