I am no moderator for saltwaterfish.com, but I can tell you where the thread is going to go if the current remarks are being continued. The past is the past and we do not need to keep bringing past remarks up. BTW j21kickster, I completely agree with you.
I'll take a bite, and help out when information is needed.
FWIW,
you don't have a true linkia starfish. You actually have the Linkia guildingi, which is, as said above, not a 'True' Linkia starfish. These are commonly known as the 'Orange Linkia,' (dispite that it's not a true linkia), or the 'False Linkia Starfish.' These starfish are much more hardy to keep in the home aquarium, and prove to be much easier to care for, compared to the Blue or Purple Linkia Starfish (linkia laevigata).
took well more then an half (1/2) an hour for temperature & the salinity (from knowledge of past purchases) was matching exactly when I SLOWLY added tank water to the bag.
All starfish have extremely sensitive hydrovacular systems, which are extremely sensitive to even the slightest change of pH, temperature, and salinity. Therefor, acclamation should exceed 4 hours (most people do 6-14 hours) using the drip method for aclamation. Otherwise, it may cause damage resulting in Loss of limbs, shrinking, and slowely dying (sometimes discribed as "Melting") off. Other methods of aclamation are often too quick and very stressful to the starfish. You said you aclamated it for 30 minutes, which is honestly not enough. 30 minutes is way too quick, esspecially for extremely sensitive starfish. I have no doubt that it will most likely die from stress due to improper aclamation than from starvation.
Anyway,
I do have 100 lbs. of LR & my tank is well over a yr old & supports lots of varity of Inverts (as you can see from my signature)
The more inveribrates you have means the less amount of food for the starfish. I've never heard of "target feeding" a Linkia guildingi, so I couldn't accuratly say how that would turn out. For the most part, I would leave your Linkia guildingi alone. If it continues to stay in one area, it's there for a reason. That area may have a particulary high amount of food for the starfish, therefor, it's staying in that rea instead of moving around the tank to find other sources of food.
The exact food for the Linkia guildingi in unknown. We can only assume it eats films of algae, some species of sponges (Guessing Pineapple Sponges?), bacteria and possibly some species of pods. We can only guess that they do best in mature systems with high amounts of liverock; we can say that because the most success from these starfish comes from tanks which are mature with lots of liverock.
I would just let the Linkia guildingi be, and hope for the best. There's nothing much you can do.
Graham