Skimmer Cup Fitment

dMiles

Member
Got my Tunze 9002, inTank media rack & upgraded cup yesterday. It seem that the upgraded cup has a longer neck than the Tunze stock cup which makes the cup flop around. Is this normal or am i doing something wrong?
 

Ripperj

Member
The tube should fit cleanly down in the skimmer, and the bottom of the cup should rest evenly on the round rim of the skimmer. It's a loose fit and will move if bumped, but should sit level.
 

dMiles

Member
With the cup balanced in the skimmer it doesn't touch the rim of the skimmer. I have about a 16th of an inch gap.
 

ausreef

Member
the in tank skimmer cup is a bit heavier than the standard one,ive found putting a chamfer on the inside of the neck base with some sandpaper makes it a lot more secure
 
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