The hot pre-summer weather is out in full force and it's time to start thinking about the 3 s's: slurpees, suntanning, and swimming. For Melbournians lucky enough to have a swimming pool, it's also time to make sure that it's still in a usable condition after a lengthy layoff during the winter months. The last thing you want to do is pull back the pool cover and find the build up of pond scum, or worse yet, a ringtail possum floating there motionless. And if your pool pump or filter isn't working properly, there is bound to be other gunk [...]