Skimmer Deltec 1000i setup

[Saisori]

I've had a deltec skimmer running a few weeks and wanted to know if I'm skimmer too wet as its not that dark brown color everyone say it should be pulling out?

Tanks is 72G Waterbox.
Tank Mates:
1 purple tang
2 clown
1 blenny
1 flasher wrasse.

Below is the cup after 2 weeks.

 

[Rocks reef]

That looks pretty dark to me, however, it really depends on the bioload in your tank. It appears as if you don't have a heavy bioload and if you feed in moderation you skimmer likely won't pull that much out since there isn't that much DOC in your water column.