That lil skimmer does work pretty well, im getting a nice thick skimmate, almost the vicosity of motor oil, even while the big skimmer is competing against it.
Nice setup... I had that little skimmer on my 2.5 gallon Nano... MAN that thing produces skimate. Real nice and stinky too. I definately would silicone that starboard to the base but make sure that your silicone is virgin. The starboard will grow coraline on it and you will eventually loose the white color.