Anyone ever used an Aquarium Surface Skimmer

[Mustang Boy]

has anybody ever used this?

http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=12703

if anyone here has ever used this or has access to one i was wondering if that height measurement was just the tube or if it was the whole thing including the little adjustment knob thing at the top

[vampie]

My measurements may be a bit off, but..
the black tube itself looks about 7"
the skimmer itself adds about 1.5" to it, so it would need about 8.5" to operate
with the control valve fully extended, the entire thing is about 12"

[jackiomy]

I have one and I loved it until I realized it was skimming my shrimp into my filter. It does a great job cleaning film and floaties off the surface though.

[Mustang Boy]

thanks guys