Most LPS will grow faster if you feed them, however they should get enough food from just feeding your fish.
Wall Tank is correct, most corals use the symbiotic relationship of zooxanthella to process glucose and other nutrients. However you can get pretty crazy growth from certain LPS by spot feeding meaty foods 1-2x a week. With that being said you must use caution to not over feed the coral more food than it can digest and expel, and secondly you need to make sure these excess nutrients you are adding to the system get EXPORTED in some manner, i.e. water changes, GFO, Macro Algae, etc.
I find feeding my LPS to be enjoyable because I like watching Duncans, Acans and brains opening up like this:
![](https://ohioreef.com/proxy.php?request=http%3A%2F%2Fi1117.photobucket.com%2Falbums%2Fk594%2FWhistlernc%2FExtended.jpg&hash=5ce2dc2dcfb00ebd9462b8bd5a3eee55500b8333)
I am particularly fond of Acans and feed this colony regularly:
![](https://ohioreef.com/proxy.php?request=http%3A%2F%2Fi1117.photobucket.com%2Falbums%2Fk594%2FWhistlernc%2F95%2520Gallon%2520Rimless%2520Build%2FAcans_zps3a7c3fc2.jpg&hash=1e4c10e4fb851a933f022e97b1db55a98412d4b0)
Probably my biggest surprise about how feeding can make a coral "pop" was when Coralgasm showed up with all these Acans at Macna this year fed a steady diet of LRS. They were amazing to say the least and the heads were huge!
![](https://ohioreef.com/proxy.php?request=http%3A%2F%2Fi1117.photobucket.com%2Falbums%2Fk594%2FWhistlernc%2F3A14063D-E37E-4761-8AA8-13022BBDE14D-4121-000002E58348A715_zpsbdd04ec5.jpg&hash=01e33b9711255b6c17064b31a3c897011e11bc65)
I brought some home with me..
![Wink ;)](https://ohioreef.com/Smileys/default/wink.gif)
Thanks for the support Bucknutz
Larry