Eheim Pro 2 leaking

There's two things I can think of to try.
1st, make sure the priming button is fully retracted (all the way up). You are going to have to open the filter for this one. See if the problem goes away. If it does, you need to slightly stretch the 4 springs for the priming button in the canister head the next time you have it open for maintenance. I had to do that on mine after I changed the primer o-ring & it was still leaking.

2nd, there is a possibility that the flow meter sight glass o-ring is damaged & the water is leaking into the head cavity. Again, you have to dis-assemble the canister head to verify this.

Let us know if you find a solution for this.

I bought the Pro 3 2075 brand new in Sept 2012 that came with a 3 year warranty. The filter leaked after 2 years destroying my $350 wooden stand. Water leaked out near the power cord. After searching the net I found out that this was a common issue among Pro 3 filters made before Aug 2010. There have also been countless reports of Eheim's Customer Support department ignoring customer emails when contacted for warranty claims.


I emailed them and immediately the next day I received a reply asking for the Serial number, the shipping address and the retail store from which I bought the filter. I replied with the information and that was the last I heard from them. I have sent them 4 more emails since then and they completely ignored them. I have been another victim of their scam.


Apparently Eheim is engaging in fraudulent acitivities, marketing their filters as "Premium" products that come with a 3 year warranty. However, they will try their best NOT to honor the warranty. Maybe I need to call them everyday and write nasty letters to get them to acknowledge my issue. I know some of their victims have received a replacement head unit this way after sending threatening emails and making repeated phone calls. However, it shouldn't have to be this difficult.


I have another Pro 2 filter that also leaked after 6 years of operation. From what I have heard, the company was bought and the quality of customer service has become horrible since then. It is now reaching the point of fraud.


I will never buy another Eheim product again. Beware!!!

For any one havering the oring issue got to advanced auto parts auto zone and get an oil filter housing oring kit to Gm vehicles usually in the help section the oring is in there. You can also go to the Gm dealership and get a oil filter housing oring for a 96' a 2002 5.7 liter motor. 5$

Don't know if this been solved yet but here's my 2 cent.

I was having the same issue too with the leaks from the power head to the cord. I was baffled on how it was still leaking and I ran a test on it with the cover off. What I found was that the leak was coming off from the Flow Indicator which was slowly leaking.


To solve the problem, I went to my local Home Depot and bought DAP Waterproof Aquarium Safe SIlicone. It resolved my issue. The gasket of the Flow indicator is probably worn out and it's hard to find a replacement so the best option is to silicone it. No leaks so far after silicone the Flow Indicator.