Unhealthy corals

I have recently i introduced coral to my tank , the tank has been running for more than 6 months . The corals were added 3 weeks ago , however the still don't seem happy and healthy am not sure whats wrong or what to do . I had a structure coral , torch , open brain , palate , stone polip , and a small anemone . The anemone is always closed , torch tentacles are small mostly closes too , rock polip are open but not fully extended plates tentacles are always small too , and the structure never opened.

I never had a spike in nitrate , nitrate or ammonia. I used to have a problem with salinity a week a go it was 1.019 and i gradually increased in in 3 days . It has been 5 days now after increasing salinity

Now parameters are
Salinity between 1.025 - 1.026
Nitrate , nitrate , ammonia always 0
Ph 8.2
Calcium , 445
Mag over 1300
Temp is 26
Lightingt , zetlight 3600, full cycle lighter in the morning and noon , darker blue during night

Am not sure what to do

Attached Thumbnails