I've found it MUCH better value for money and gives much better results than anything pre-made (ESPECIALLY Equilibrium ). The only thing I've found better is Vitalis (the old blend, the horses hated the new one, and with the addition of brewer's yeast and sunflower kernels this is pretty much the same!)
The recipe for anybody who is interested!
Mudgee Dolomite - 5
Garlic granules - 2
Rosehip granules - 1.5
Seaweed meal - 1
I usually make it up using the measurements as kilograms, it stores well in a cool dry place and the horses like it. I feed 1/4 cup twice a day. We did add brewer's yeast (which changed the quantities to 10, 3, 2, 1.5 and 2 brewer's yeast) but found the horses didn't like it.
Discuss away guys!