Fluval 205.

[hfp75]

Yep.

I reseated it many a time took off the o-ring and you can see where it wants to sit in the groove in relation to the square shape of the F205. I tried it where it wants to sit and the opposite. It leaks with the o-ring in either position.

The leak shows up at the handles (both) and drips down.

There is no media.

Unless someone knows a trick to fix it I am assuming that the o-ring is old and needs replacing of the canister/lid don't line up quite right.