Check and make sure your SG is 1.023 to 1.025.
Also your PH at 8.2-8.3.
Let the tank cycle for around 1 month with live rocks
and a piece of prawn.
Make sure your NH3 peak then zero,
NO2 peak then zero.
Your tank is ready for fish or coral once both
NH3 nad N02 is stable at zero for at least a week.
Longer better.
Regards
Happy reefing