Hi Jim,
Yes, I think you are onto something. At the bread school I treated
myself to (San Francisco Baking Institute) they taught us to keep our
starter at room temperature and feed it optimally 3 times/day. (Two
will do, one isn't so great.) Maintain your hydration ratio with each
feeding. And the optimal ratio of old starter to new flour + water
will depend on the frequency of feedings and the hydration.
They also taught us to ferment sourdough at 76-78 degrees F
(non-sourdough at 74-76).
Allen
Home baker
San Francisco