Protein Skimmer

I posted this on the equipment forum but no one knows.
Does anyone here know why my aqua c remora protein skimmer collects bubbles in the collection cup predominately to pretty much only when the lights go off? To clarify, the only thing that happens to my tank is the lights go off. There is no catalyst provided by anything from the outside.
 

artie1209

Member
PH Changes at night when photosynthesis stops and more co2 is builds up maybe that changes bubble creation or stability.
 
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