Colonix is mroe than enough fiber supplementation, the rest should come from diet. It IS a candida cleanse, really! Just follow the anti-candida diet while you take the Colonix and you should see remarkable results very quickly! yippee! :)
It would be a very good idea to take a bit of probiotics while on the Colonix cleanse. Primal Defesne and a bit of Kefir. I believe there is some acidophilus in Colonix.
It's a good idea to eat fermented foods periodically to maintain healthy gut flora. They don't need much help once you're clean, altho oxygenating agents such as liquid chlorophyll or super-greens or H202 are a big help to keeping the friendlies and killing the baddies.