It might not have anything to skim but I think you should raise it an inch or two.
Did you use a bag? Is there a lot of bubbles coming from the overflow?
Can you turn the skimmer around 180deg?
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Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers.
Current Tank:
Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k.
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