trace elements mixed with kalk?

[gguy123]

So after reading multiple threads with people having success adding trace elements daily I want to give it a go. I have one free dosing pump head and a bucket of kalk that I dose with daily. My question is which elements can I add to the kalk solution? Potassium, Strontium, Iodine, metal mix? I've been debating switching to a 2 part solution but I love the cheapness of kalk and it keeps my ph up.