I always recommend that you check chlorine and pH everyday--though sometimes I'm a tad negligent myself--but I do test it every 2 days at a minimum, and once a week a run the full battery of tests in the PS-233--
FC
CC
TC (quick test)
pH
T/A
CYA
Temperature.
I only test Ca 2 or 3 times a season because I have a vinyl liner and don't use Cal-Hypo too often.
When we go away, I'll leave a series of jugs of bleach--the 1gal 48oz ones of 6%. Then I'll tell the house sitter to add half a jug every other day. So far, I've always come back to a clean pool--because they've always followed my directions!
Bookmarks