No worry tried many way still the same outcome, even try using poly filter. Even read up mentioning "break in" and it did "break in" but still same outcome. Got a smaller skimmer and place in the first compartment, second will be my filter. Now i remember before i decom my tank 10 years back also encounter this problem but not sure how i solve it. anyway everything solved, now just wanted to sell away the bubble magas qq. Used less than a week had to offload already.