are you running it on a timer or wave maker?

The impeller is turning. I've never seen a washer of any sort in this unit. The impeller has a sort of gear in it's bas and a similar toothed thing in the bottom of the housing but it doesn't seem to spin.

No wavemaker.

I've pulled it out. I think it's kaput. It's not very old so I'm less than thrilled about that.

If it is less than a year old, call the LFS or JL if that is where you got it. You should get another/replacement.

Update on this...

I pulled the other Koralia out and looked closely in the bottom and there actually *is* a washer of sorts in the bottom. It must have come out when I was cleaning it in the sink.

So...mystery solved but now getting this little $0.10 washer looks like it's going to be tough. I emailed Hydor -fingers crossed they can supply the part.

Anyone else have this problem ? If so, where did you get a replacement part ?

It will take a bit and probably a couple of emails but they do send it for free.

Hey, I'd happily pay for the part but none of the dealers seem to have any parts. :sad: