Do you think that candida can feed on psyllium since it is a grain/carbohydrate or is it only fermented by good bacteria?

Fibers like psyllium are long chain sugar molecules. Candida cannot feed on fibers. It feeds on simpler sugars.

Also, does psyllium remove good bacteria from the gut by scraping the intestinal wall?

You are going to lose bacteria regardless. Flora is always being secreted in the feces. But they also multiply restoring the levels. 

What is your overall view of psyllium as a supplement for a candida sufferer on a low carb & sugar diet?

Psyllium does have drawbacks including the tendency to cause bloating in people and it is sharp and believed to damage the intestinal wall. I prefer rice bran and oat bran, which are soft fibers and also provide a lot of B vitamins and other beneficial compounds.

 Thank you for the insight on acids helping fight the yeast..

Do you then recommend people regularly use apple cider vinegar, say 2-3 tbsp per day?...Also , low stomach acid contributes to candida overgrowth , correct?

I had previously been taking antacids (pepcid, zantac) just about everyday for the past 2 yrs.

Correct, low stomach acid does contribute to more Candida growth, also allergies, infections and nutritional deficiencies.

Apple cider vinegar is good, but I don't like substituting for the body's production of things long term. It is better to support the body's production of its own stomach acid in the long run. Here are a few old posts on the subject:

http://curezone.com/forums/fm.asp?i=1604366#i

http://curezone.com/forums/fm.asp?i=1471203

http://curezone.com/forums/fm.asp?i=1582781#i

http://curezone.com/forums/fm.asp?i=1527892#i

And the importance of maintaining stomach acid:

http://curezone.com/forums/fm.asp?i=1581539#i