You could raise your
skimmer a bit by placing it on top of something in the
sump. The
skimmer skum looks a bit too liquid...you want to get a nice, dark, rank-smelling skimmate. Try to raise it to the point that your getting really small, thick bubbles that are making it to the
skimmer overflow.
Also, looks like you might have a/some glass rose anemones in your tank (can see in picture with the chromids). These can quickly infest your tank if you don't get rid of them. If your shrimp don't take care of them, then you might want to consider getting some Joe's juice or something to get rid of those.
Otherwise, everything looks great! Beautiful tank!
