In my short 2 year history of having protein skimmers my only thoughts are-
- Your skimmer is fairly new so the composition of the skimmer changes as film etc build up and I found I had to dial my skimmer in more often in the beginning when first getting it.
- Also I had this happen when I either slightly repositioned the skimmer and caused a slight crimp in the air line or when I ended up getting some salt creep into the airline.
Hope you solve the problem!
Palmer
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