need help with hard corals
 

i just added some hard corals frags to my tank a few days ago. not sure if the doing to well, they seem to be turning white any clue why ?
here is a current picture of the tank the frags are right below the toadstool
http://www.canreef.com/photopost/sho...sort=1&cat=508

They can turn white for many reasons. Lighting acclimation, water quality different than they're used to, the toadstool releasing toxins to fight off hard corals, etc. What are your paramters like? Ca, alk, temp, pH, etc.....