Red-1
I used to be decisive, now I'm not so sure...
Some magnesium oxide can be contaminated with iron but you can get low iron magnesium oxide. ForagePlus source the low iron stuff. I think Red Horse Products might have something aling those lines too.
Personally I would have hay analysed for mineral profile and top up accordingly if hay is from a consistent source. Simply because that has worked really well for my own horses thus far.
Thank you, will get some on order. YCBM has also been very helpful
Today's walk out with the newly softened hoof boots went well. Had the boots on for about 1/3 of the ride, again just a little ruffled hair, no major issues. I was bright enough to use a rucksack to carry the boots once I pulled them too. He loves his walks out, hopefully, once the boots are worn in, they will be rides out. There were loads of walkers and they all stopped to admire the black beast with his wavy mane and proud demeanour.