Just set up our new pool last Fri. and trying to figure out all the chemical stuff. Wish I would have found this site first! I read on Pool School I could get away with just the small Chlorine/pH test kit for my small pool. So far the only chemical I've added is 1 tablet of what I'm pretty sure is a trichlor puck in a floater. Tested the water this morning and the Cl tested at .5 and the pH was 8.2. I'm headed out to get some bleach and muriatic acid but not sure about the CYA. Should I just assume it would be 0 still? Also, we're headed out of town Wed afternoon through Sat afternoon. Is there anything I need to do to it to keep it from getting gross? TIA!