change ur water will help(50%).
after change it, cycle it for 2 weeks. Then change ur water again (30%). Add KH and Iodine inside. After that, u can puchase some hardy coral inside.
Remember, if you put ur fish inside ur tank first bout 2 weeks, and then put in the coral, ur coral hard to be alive in ur tank.
Put Coral first B4 you put ur Fish inside......If you want a Reef Complete Tank....
correct me if i 'm wrong.....
P/S: As i know, some reefers put their fish first b4 coral, the coral still can survive and can have a nice complete tank.