Ask the Nutritionist: Dr. Getty's Forum for Equine Nutrition
Welcome to my forum.
Here you will find more than 6 years of questions and my answers. It is searchable and offers a great deal of information.
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All the best,
Dr. Getty
Hi Rhonda,
Thank you for your kind words -- it is truly my pleasure to make a difference in the lives of horses and their owners.
Sounds like to you have a plan. The float procedure for determining sand in the gut is not really "scientific" but it does give you an idea of what's going on. Sand colic can creep up on a horse very slowly, so it's best to know if it's an issue.
Ration Plus is something you'd want to give indefinitely for an older horse that tends to have digestive problems. The only time I use it as a "temporary treatment" is for the horse that is undergoing short term stress (such as trailering or abrupt changes in feed or environment).
All the best,
Dr. Getty 
Where are you from? Bayfield, CO