eheim 2075

[gentle]

it has been 4 months since i got my 2075...have faced no problem until last week...

i heard sound of air bubbles forming inside the canister...

thought it is one-off, but now every day i shake the canister, bubbles will flow out of the canister...

my inlet is totally submerged (no skimmer) and i have a pre-filter connected...

it is likely that a small crack/leak is causing the air bubbles to be sucked in...

how do i "troubleshoot"?

[Joop]

Sent in to QianHu to get it check. Still under warranty?