Slickness on the vinyl surfaces ALWAYS means you're working on something growing in your pool. That's my first clue that I need to shock, which I do only rarely. Check your pool chemistry to make sure your levels are in range (CC, CA, TA, pH). If so, try these three things to sparkle up your water: 1) superchlorinate anyway to levels required based on your CYA, 2) run your filter 24/7 for the shocking, then knock it down to slightly over what you need to turn your water over; 3) use a skimmer sock ALL season. If you don't mind running the filter longer go ahead. I run mine from 8am - 6pm. I don't split up the time or need to run it at night. I'm not in California so that's not an issue. My pool ALWAYS sparkles. When it doesn't, then I know I have a problem.
Hope this helps.
CaryB
Anyone but Buffalo
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