The science is clear - magnesium deficiency is very rare. These days therte is only one circumstance when we may add TINY amounts of magnesium.

That is if there is a flush of usually Spring grass on rich, well fertilised pasture. This grass is often VERY high in potassium. Though there will be plenty of magnesium in the grass the horse has to pee a lot to get rid of the potassium. Because it struggles to control magnesium it can lose too much. This is an affect that rarely lasts more than a few days and we would normally add just 0.1 - 0.4 grams of magnesium a day.

If your grass is not rich and well fertilised this situation will not occur.

FineTUNE 2 is the product we use for this. Just repeating - we normally work within the range of 0.1 - 0.4 grams a day. That compares to 3 grams for most modern balancers and 12-20 grams for many formulated feeds.