Alternative ideas for the Trace elements A- & K+ in my ESV 2 part ?

[SomeHappyFish]

I can't seem to find the A & K in my areas and when shipped its insanely expensive... I can get AF component strong, Red sea and some of the Fauna Marin products, but I can't decide which would be best to substitute the Tropic Marin products.

 

[Koty]

I ordered 5 liter of each A & K from a German online store