You ferment at low temerature for allmost all types?

Yes, my experiance is fermentation for all ales yeast should be around 17-18`C and the wheat yeast only a few degrees higher at 18-20`C. Wheat yeast seems more forgiving, but I have reached best results by going rather low. I guess it partly becouse the yeast taste is hard to control and also hold in you mind, whereof, hops and malts might be easier to design, and hence, easier to keep in the mind.