With coral yes and your salt again needs to be brought up. These coral do not do well in hyposalinity. 1.023 is too low.
Mag and CA need to be monitored especially with any stony coral. Nitrate is up there and phos plays a role.
Personally, you are not quite prepared for a coral tank without the proper test kits and monitoring of tank.
Are you using RODI water or tap water from the faucet to mix and add to your tank water ?
As huge suggestion: Take a good water sample to a Trusted LFS that does Not use API test kits and have them check all your parameters to see what they come with and to compare with yours.