Greasing filter impeller?

[Freshman]

Hi,

Is it necessary to grease the impeller?

Will the grease affect the water/fish?

Please advise..

Cheers

[tawauboy]

the impeller in the canister filter?
no need to as the ceramic spindle is smooth and offers little resistance.
and water is a lubricant too.

[Freshman]

yup, the impeller in the canister filter.. I bought a second hand canister recently, the ex-owner told me he had applied some eheim grease on the impeller..

So, just checking with with u guys whether this will cause any harm to the fishes..

[|squee|]

If it's Eheim grease it's meant for the aquarium and therefore shouldn't affect

[benny]

The Eheim grease is actually just vaseline.

Cheers,

[Justikanz]

There's a spray on lubricant used by Qian Hu when servicing Ehiem parts... I think it is silicone based if I didn't remember wrongly... That will be inert...

[ankank]

Referring to your original question:

Is it necessary to grease the impeller?

Generally speaking (even for steel shafts): no. Gunk from the tank will take care of that after a few weeks of running time anyway (you will notice the impeller running more silent over time).