Trapped Oxygen?

[goldenchild]

Except removing the slime in this tank not much.

I have heard of surface extractor for canister filter but not sure how well the work. Eheim makes one ~$40 on Foster smith and a no name brand unit for $9.99. I haven't used either so someone else would have to speak about ease of use and maintance.

I've used the Aquaclear attachment and it works great.

 

[MadRussian79]

Please do not take this as challenging or being argumentative, I'm simply asking to see if I am overlooking something...

Would the sump/overflow actually "remove" the slime in a way that the canister/powerhead wouldn't? From my understanding either filter will simply distrurb the surface preventing the "slime" or oils from collecting at the surface. Either form of filtration (canister or sump) could use chemical filtration such as carbon or similar to remove slime/oils...

No I didn't think that way just made me think a bit. The over flow skims off the surface. The main thing a sump/overflow would do is gather the slime at the top of the sump and not at the top of the tank. You could then drill a 1/4" hole in the sump just above the water level, bulkhead or glue a tube and have the slime drain away with excess water.