New return pump suddenly barely works

[cdw79]

I purchased the following pump https://www.saltwateraquarium.com/eflux-loop-dc-flow-return-pump-1900-gph-6010-current-usa/ for my new Cade 1500 build and have had it installed for about a week. It has randomly overnight lost 90%+ of its power. Whereas before it was so powerful I had to be incredibly careful about adjusting the knob even a little bit, now it barely puts out any water even at 100%. I tried flipping it around in case somehow air bubbles were the issue, and I checked the connection from the pump to the tubing and there wasn't any leakage or any other obvious way that head pressure was being lost. I'm at a bit of a loss, especially as I can't imagine that this pump could have failed like this so quickly. Any ideas?

 

[KrisReef]

I had a similar issue today. Turned out the pump had inhaled a loose suction cup into the intake. Easy fix, I hope your situation is resolved quickly.