It's doable! Expert Davy Merino of the blog InTheSwim Pool says to use chlorine tablets to keep things clean without having to dump all the water out. "Most inflatable pools need just half of one 3-inch tablet per week, or several 1-inch tabs at a time, replaced promptly when they dissolve," he says. "That said, your test kit will tell you for sure." You'll want to test levels a couple of times each week, and you can buy these tabs on Amazon — Clearwater's CH0019 1 kg Multifunction Chlorine Tablets have a 4.6-star rating.