Lighting and skimmer

[Proteus]

I did a water change two days ago and added about five new frags. Just never had the skimmer go crazy while wide open. Since light came on skimmer calmed down. I'll let it level out for a day and adjust height as necessary. I have done second regiment of bioptim (probiado). If bacteria level hold any affect. I do understand ph and how it changes during lights off