Good GI docs like Dr.G know a million times more than I do about UC.
But they know little compared to what may be known someday.
So if DIY fecal transplant doesn't eliminate all of your symptoms,
don't give up. Although Dr. G recommends not using antibiotics, I'd consider taking a course of antibiotics immediately
before a second attempt at fecal transplant.
The classic colonoscopy-assisted fecal transplant technique pioneered
by Dr. Borody of Australia uses antibiotics right before the tranplant.
Another approach uses oral antibiotics
amoxicillin 1500 mg/d,
tetracycline 1500 mg/d, and
metronidazole 750 mg/d for 2 weeks
and no fecal transplant:
as discussed on the following thread:
If fecal transplant alone doesn't work, I'd try a different donor.
If that doesn't work, I'd try it again, with course of antibiotics