What kind of light do you have and what intensity?
If its not a reef light, then the coral will die, doesn't matter what the parameters are or how often you change the water.
What size is the tank? The smatfarm is a decent light, but we can't give you feedback on the lights without knowing the tank size.
How old is the tank? Looking at the tank pic, it looks brand new like you built it yesterday. Hammer coral is not a beginner level coral, it requires a stable mature environment, and you should wait a few months before trying this coral. There are several other beginner corals that you can start with, but your tank is till not ready IMO.
Looks like your using the API master test kit, which is pretty useless. Don't use API, get either salifert or hanna test kits. If you want a coral like hammer, then you need to know the alkalinity and master keeping the alk very stable.
"Coral is closed and not open" could be for countless reasons, so we need all the info to help you. But seems you might be getting ahead of yourself here. Need a proper light and proper test kits before the corals.