Wow thats an expensive slurry! I assume you are feeding before the lights come on and after they go off? I understood that SPS feed at night.
Have you always target fed? I usually just dump the food in front of my Vortechs.
I personally would not feed blood worms to any marine fish or corals. It is not a part of their diet. There are many many other great foods out there for marine fish and inverts. Blood worms are good for carnivorous fresh water fish though.
I'm a little curious and I know the arguement we keep a "non natural" ocean box, but have you ever heard of fish/corals eating carrots and broccoli?
I add oyster feast a couple times a week. I don't know if it's helping or not but it makes me feel like i'm doing something ^_^
Pappone, been using it for a few years with a little Seachem Fuel about 15 minutes before feeding.