So I posted on here last week about a sudden appearance of what I assume is algae, and cloudy water. After using the SLAM method for what took about 4 days, my pool was spotless, drop of less than 1ppm overnight. I had been scrubbing, vacuuming, cleaning filter and maintaining chlorine levels throughout. We’ll after allowing the pool to drop back down to normal levels, one day later, and it’s back. Any ideas? 10,000 gallon vinyl pool with heater.