Getting back to the one question asked, when going away, short of having a neighbor dose the pool with bleach, what is a good solution for maintaining chlorine levels without over stabilizing?

We were away last August for 2 weeks. We loaded up our three floaters with three 3" trichlor tabs each. The CYA killed the value of the chlorine and it was getting green by the time we returned (no neighbors to help with bleach).