Tunze Nano 9002 Skimmer - No bubbles
 

Has anyone purchased a Nano 9002 skimmer lately? I bought mine on Boxing Day. I had it running on my QT tank for the last three weeks. I do not get any bubbles at all from it. At first I thought it was just breaking in. Took it apart and checked to make sure the air line was not kinked or plugged. If I blow in the air tube, I do get bubbles. I think it is the venturi. Has anyone had this problem? Does anyone have a spare venturi in Edmonton, until I can get a new one? Thanks for the help. Leon

I don't have one of these, but there should be warranty on this

I got mine used it works great, maybe yours is defective?

Yes it is still under warranty, but they want me to ship it back (at my cost), and then hopefully get a replacement. In the meantime, my QT tank with two fish in it will be without a skimmer. I am trying to get them just to send out a replacement venturi asap. Thanks, Leon

i dont think you should have to pay the shipping for something that they sent you if its not working properly. but thats my opinion.

I know this may seem dumb but I'm going to ask. Is the hose connected to the top plate of the skimmer?

Not dumb at all. But I can't even get it to pull air in a bucket. Just the pump, venturi, and air line. That's how i was able to blow in the line and actually get it to bubble. Process of elimination. It will actually backflow water up the airline.

I have the same skimmer (got mine used ) and it has never had problems making bubbles . I have seen some post on bunk venturies on nano reef and the customer service rep sent the people new ventruris no questions asked .Your fish will be ok without a skimmer for a while my 50 gal has no skimmer and it does fine.

Disassemble the venturi. There's a small elbow that feeds air into the venturi - this can get calcified and not allow air through. If you had the water level too high and it sucked a lot of water into the venturi, this happens and clogs the air intake. You might be able to force a small amount of air through, but the force of the venturi isn't enough to suck air through.

I've had this happen on my old 9002 a bunch of times. Here's what the part looks like, and what the calcification can look like:
http://i290.photobucket.com/albums/l...k/P3024447.jpg

Soak it in vinegar for an hour and it should be good as new.

EDIT: I just reread the post about backflow - do you have the venturi assembled backwards?

Not sure how it could be assembled backwards. This thing is pretty straight forward. Hopefully Jeff will get back to me today with a solution.