Re wheat bran & 'poopers', because he had impaction once is not at all a good reason IMO, especially long term & not feeding anything to counter the excessive phosphorus or otherwise balance the diet. What's the bute for & how long has he been on it? As I don't know how many minis you have, I don't know how much hay he gets from 1-2 bales a day. If he doesn't need extra condition, there's a fair chance he doesn't need anything other than hay as his basic diet, although nutritional supplementation should be added.
I do NOT and will NEVER believe in evolution. Its a bunch of crap. And secondly, everybody has their own opinions and it is really really overwhelming to go out and seek help and advice and getting tons of conflicting and independent answers.
Please don't be disrespectful just because you don't beleive it.
I won't voice my thoughts about your beleifs, but you might cop it anyway if you are rude about others. Probably a good idea to leave your personal beleifs out of it anyway, as it's as irrelevant as your sex life to the subject.
As far as horse's digestion goes, just read up on it & pretend anything that says 'evolved' actually says 'created' & you should get the idea. As for different and conflicting opinions, yes, you'll get that wherever you go, on whatever subject... unless you only ask one narrow minded person
. That's why I think it's so important for us horse owners to do our own homework & learn the principles yourself, so you aren't just going on blind faith & can better weigh up the advice you get & pros & cons of different approaches.