There are many great things about having a swimming pool (or a hot tub – or both), but maintenance isn’t one of them. Beyond checking filters, dealing with pool covers, and yanking out leaves, the careful balance of chemistry in your pool to keep it perfect for you and your family while inhospitable to microorganisms is a major chore. So when you find yourself with old pool chemicals after changing brands or finding them expired, it’s a little harder than you might think to dispose of them. [Read more…]