When we go away for more than just a few days we usually have someone stay in our house and we have them add chlorine to the pool. With our mostly opaque electric safety cover, they only need to add chlorine about twice a week.

If we didn't have that option or a neighbor to help, we'd just use Trichlor pucks in a floating feeder. For every 10 ppm Free Chlorine (FC) added by Trichlor, it also increases Cyanuric Acid (CYA) by 6 ppm. So for a week, that's not too much CYA. The Trichlor pucks won't last for much more than a week anyway. If you go on vacation for more than one week, you pretty much have to have someone look after the pool. Those with automatic dosing systems such as The Liquidator or peristaltic pump or saltwater chlorine generator (SWCG) can sometimes go for at least a couple of weeks depending on capacity and whether they use a pool cover.