Coral growth issues..

[mikellini]

Oops, I see you do feed a little. I say, feed more! Many have had success feeding LPS pellets...

Also, API test kits are notoriously unreliable. Red Sea makes an OK kit (although the phosphate won't read less than 0.08); I would consider just getting a Hanna checker for alk and phosphate (ULR phosphorus), and get a Red Sea nitrate test kit. Also Red Sea has a 'reef foundation' kit that includes calcium, alkalinity and magnesium. With regular water changes, you probably only need the calcium test (if you get the Hanna checker for alk).