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If I understand your question correctly, you are referring to how to adjust water pull from the skimmer and drain/sump. I think you said each had its own valve at the pad right? So just find a good balance of water flow from each location. A good place to start is having the skimmer at about 60% open and the drain/sump at about 40% open. You can always adjust them from there.How do you calibrate the skim/sump mix?