+ 1/2 the normal dose would be good.

+ If you add BOTH dichlor and cal hypo via the skimmer, make SURE to clean up any granules that don't make it. Cal hypo reacts badly with EVERY other form of chlorine, except maybe bleach. (But I haven't tested that)

+ Sounds like you need the "Sight-flipper" -- it turns hindsight into foresight. My understanding is that they are rather rare, unfortunately.