DIY Fish Food Suppliments

I am making my own fish food. Using Marc's recipe. However, his recipe doesn't include any supplements or vitamins.

What vitamins and supplements should I add to the recipe?
 
2 things that I use in mine:

http://www.aquacon.com/boydvitachem.html

and


http://www.marinedepot.com/md_viewItem.asp?idproduct=KM3631
 
I use Selco, Vitamin b12 (appetite stimulant), beta glucan (strengthens immune system), and garlic.

I do not add these to the food prior to freezing. All supplements are added after the food is thawed.
 
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