05-19-2011, 12:20 PM
Join Date: Oct 2010
| | Eheim 2215 air and whistling
Ok, I know that there's air getting into my eheim from somewhere... I keep hearing bubbles break against the impellor and it spits out bubbles. It's been doing this for weeks and I haven't been able to figure out why.
There is no CO2 or air equipment on the tank, so I've ruled that out. There are no water leaks anywhere. I have cleaned out all the hoses and reattached them, using hot water to soften the hose and then cold water to get a tight fit around all the the nozzles, etc.
Here's what confuses me... I'm hearing a whistling noise, but it's not coming from the canister or any of the connections. It's coming from my aquarium. It's loud enough that I can sort of hear it from about 5-6 feet away. It's loudest when I put my ear up against the glass or when I open the lid and listen inside the tank. I can also hear it in the plastic intake tube. The noise stops when I turn the disconnect valves to stop the water flow. The noise also changes/reacts whenever air hits the impellor inside the canister. The 2213 I'm running on this tank does not produce this whistling.
One difference I noticed between the 2215 and the 2213 is that when I use the hand pump to try and draw water into the empty cannister through the intake (like priming a brand new filter), the 2215 takes a lot of work to get the water over the bend on the intake to start moving down into the filter.
The o-ring is brand new, I thought it was the cause of the air problem so I bought another. I've used the eheim lubricant on it.
So now I'm looking at the disconnect valves or the intake that attaches to the canister itself. But how would either of these explain why this filter is making the aquarium whistle, but nothing is audible around the cannister or the disconnect valves?