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My skimmer is just filling up with bubbles and water. I have been using it fine for months and it now is having this problem. I've tried raising it and taking the collection cup off and letting the bubbles flow freely but still no use. I did add an algae scrubber but that shouldn't mess the skimmer up since it's still in the process of building algae. I was curious if anyone has any suggestions. I do water changes weekly and have done this since the tank is up so I don't see how that could change randomly. Also I haven't cleaned it. I read that that produces bubbles.