I would leave the tank for a week or so, Get you calcium levels and kh levels up to about 400ppm cal and kh of abou 8-9.
Get some phostphate remover like rowaphos to get po4 below .01.
Your tank will start to get some algae which is normal.
Dont worry about the corraline algae as it will just start by itself.
Get a refractometer and keep the salinity at 1.024-1,026.
Do some research on corals and decide what you want to keep.
I would start of with about 6-7 corals like , euphylias, leathers,mushrooms etc.
Also add a few easy fish like yellow tang etc,
make sure you use ro or di water to mix salt and top up water.
weekly water change of say 20% would be good to keep the system fresh and help reduce nitrates,
If you get some biodigest from organism i would add a vial once a week for say 4 weeks to increase the bacteria in your tank.