I haven't read through all the posts so I'm catching up. I'm at the colicky horse, who I hope is ok this morning.
Becky, you mention that you didn't know that colic was so prevalent. The guy that runs the pet cemetery where a couple of my horses are buried, said the vast majority of horses he picks up for burial are colics and he picks up several horses EVERY DAY. Unbelievable.
Hope your colicy guy is okay. I lost one to colic a couple of years ago. The horses I have now seem to have iron stomachs and never miss an oat.