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Old 01-04-2015, 05:22 PM   #11
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Yes it must be drilled! All that overflow boxes can leak when power off.

How does it leak when the power is off?
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Old 01-04-2015, 05:23 PM   #12
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Yes it must be drilled! All that overflow boxes can leak when power off.
How does it leak when the power is off?
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Old 01-04-2015, 05:30 PM   #13
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If one uses an HOB style overflow box to feed the sump, then no drilling is needed. And when the power is off, then it will only drain momentarily until the water line in the overflow is below the spillway leading to to the drain hose. That is not the same as leaking.


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Old 02-05-2015, 10:45 PM   #14
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Lightbulb source of air leak in Eheim 2215 confirmed

I have absolutely confirmed the source of the air leak in the Eheim 2215. I have found it in my original purchase and 2 replacements. Every one had the same defect. It is a manufacturing and/or design defect. The third replacement was a 350 which is the same filter with a different marketing designation.

You can correct the leak. It is in the elbow inlet at the bottom of the filter. It does not seal and allows the pump to suck in air. The fundamental problem is that the inlet side of this filter system should have had a larger diameter. The smaller designed tube is under too much draw pressure. You will note that the tube size on this filter is the same as the 2213, which has a pump with a lower draw pressure

Remove the elbow:
- Remove the o-ring and replace it with one that is the next size larger.
- Wrap at least 6 wraps of plumbers Teflon tape over threads
- Thread the elbow back in. It will be tight. Do this carefully so as to not crack the plastic.

Eheim "customer service" says they have never heard of this before.
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