FishProfiles.com Message Forums

I just got myself a Rena XP3 filter for my 90 gallon tank. I set it up as it says to in the instructions with one exception. One of the water lines was too short so I replaced it with a prefab Fluval hose with fittings on each end. The replacement hose was too long and could not be cut to size because of the fittings so I coiled the extra behind the filter. (some of it sits lower then the power head on the filter). Anyway, Things worked fine for a few days after start up then while I was playing with the quick connect hoses it started to make this high pitched whistle sound. The sound is coming from the back of the tank and not the filter itself. If I shake the hell out of the outlet line (this is the line that came with the filter) I can change the pitch of the whine / whistle and even temporarily stop it.
This however lasts seconds and then the whistle is back. Any ideas on how to stop the noise?

Thanks,
Plan.

You using the spray bar submerged? Or the valve that came with it? I had to lose the valve and drill out the holes on my submerged spraybar to kill the whistle.

I didnt use the valve, as I didnt see its purpose. The spray bar is submerged so it could be the culprit. Thanks for the tip Jake.

Welcome Add a few holes if need be as well. Mine has 13 holes, all bored out with a 5/32 drill bit.