What Mineral Supplement do you use?

I'm sure this has been covered before, but I've never seen it!

I use Hoffmans Horse Minerals and Noralta Feeds

I don't feed any grain or horse feed. We feed lots of hay, alfalfa pelletsm, flax, and Nutri-Plus++, which is a vitamin and mineral supplement. I also leave a mineral salt block out for my horses, but they don't mess with it much since I started using Nutri-Plus++.

I don't generally feed any feed either, the only time they really get grains or feeds is when they are working really hard.