Coralife HOB 65G superskimmer issue

[5ft24]

Had this SS since August. Been running great. Clean the pump monthly to ensure no algae buildup, etc. A month ago, i noticed the bubbles were larger and not so many. Not pulling any skimmate into the cup. Checked the air silencer and removed it in case it was plugged. No change. Pulled the pump, no real gunk, cleaned, used a piece of paperclip to make sure the air hole in the intake screen was clear, put it back together. Same thing. Yanked the whole skimmer, gave it the vinegar cleaning, cleaned all plumbing inside with brushes etc, put it back in and gave it a week to settle. Same thing. Found out if i put a little suction on the airline, and pull a little water up in it, then blow out the water and blow more air into the pump, it works great for between an hour and 2 days, then the bubbles drop back again. The volume of the water going thru appears the same as before.
Any suggestions?

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[withoutaclue661]

Are you using the silencer? If you are try running without it. I had the ss125, constantly cleaning it. Would also go crazy and overflow regularly.

 

[5ft24]

Fixed. I had soaked the venturi in vinegar and scrubbed it quite a few times with no luck. Finally put it in hot water to soften the air hose and removed it. Couldn't get a toothpick thru the hole. Used a straightened paperclip to punch the crud out, soaked it in vinegar for an hour, made sure all the gunk was gone and reinstalled it. Works better than it did new!

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