The fact that the water is clearing and you're seeing evidence of dead algae is great...keep that chlorine level up, keep your filter running, and make sure to keep an eye on your filter pressure and clean it as needed. The chlorine will kill the algae, but it is the filter that will remove it from the water (other than what you're able to vacuum up)

You can force your cheaper test kit to measure higher chlorine levels with this method: http://www.poolsolutions.com/gd/how-...d-testkit.html

It's a ballpark, because you lose a little accurace with each dilution, but it'll be better than just guessing. You want to keep the chlorine level up at 15 ppm until the pool clears, and until you're not losing more than 1 ppm of chlorine when testing in the evening after sundown and again in the morning before the sun hits the pool. Once you're at that point, you can let the chlorine level drift back down, but with a CYA of 50, you never want to let it get below 3 ppm, EVER. And since your CYA is at the top of the range, I would keep it closer to 5 or 6 ppm if you can, just to give yourself a little wiggle room. (See the best guess chart at http://www.poolsolutions.com/gd/best...e-chart.html#a for a better explanation of that)

Janet