can these still be saved?

[Amandry7]

Store told me to add Balanced Calcium and Alkalinity system... It turn a lot of my DT pink, yesterday I saw red slgea (i think) on the rocks and on these I wiped the off... Any thoughts?

 

[Bectan01]

Do you test for alk and calcium? Were they low? I am not a big fan of adding things you don't test for or need and it doesn't look like you have many corals anyway?