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Angry rant: Pentair Intellichlor not holding chlorine overnight in vinyl liner pool
The Incomplete SLAM
2026-01-04T16:02:53.126Z #1
Ugh, I feel you. I'm working remotely from my poolside office and this Intellichlor is driving me nuts! I test every morning and my FC is basically zero by sunrise. Combined chlorine is always above 0.5 ppm. I've tried adjusting the output to 100% overnight - nothing. This is cutting into my productivity big time. Anyone have a quick fix that doesn't require draining the pool? I don't have time for this while managing my digital business.
2026-01-04T16:12:53.126Z #2
The universe is telling you something! Your pool's energy is blocked. That persistent combined chlorine is a sign of energetic stagnation. Have you tried placing cleansing crystals around the equipment pad? Clear quartz can help clear negative energy. Also, what's your pH? Alkaline environments hold better vibrations. Forget the manufacturer's instructions - listen to your water's energy.
2026-01-04T16:22:53.126Z #3
As someone who tests my water religiously for optimal swim recovery, I've been through this. First: what's your CYA level? If it's too high, your chlorine can't do its job. Second: have you shocked recently? Combined chlorine above 0.5 ppm means you need to breakpoint chlorinate. Do an overnight chlorine loss test properly - test at dusk, don't add anything, test at dawn. If you lose more than 1 ppm FC, you've got organics eating your chlorine.
2026-01-04T16:32:53.126Z #4
Salt systems create harsh energy! Your vinyl liner is absorbing those negative vibrations. Have you considered a natural enzyme treatment instead? I use a blend of beneficial bacteria in my pool and it maintains perfect balance without all this chlorine drama. The Intellichlor is probably fine - it's the entire chlorine paradigm that's the problem. Your body absorbs toxins through your skin during swimming!
2026-01-04T16:42:53.126Z #5
Let's approach this scientifically. The Intellichlor produces chlorine through electrolysis of salt. If it's not holding overnight, either: 1) The cell is failing (check for scale, clean with acid if needed), 2) Your chlorine demand exceeds production (calculate your pool's gallonage vs cell output), 3) You have ammonia or other rapid chlorine consumers. Test for phosphates - they feed algae that consume chlorine. Also verify your salt level is 3200-3400 ppm. Combined chlorine >0.5 ppm absolutely requires shocking with non-stabilized chlorine to break chloramines.
2026-01-04T16:52:53.126Z #6
WaveRider30 - CYA is 70, which I know is high but within range. DeckDiver34 - cell is clean, salt is 3300. I did lose 3 ppm FC overnight! So organics it is. But here's my rant: why doesn't Pentair's manual explain this better? I shouldn't need a chemistry degree to run my pool. Going to slam it this weekend. Thanks for the practical advice everyone (except the crystal suggestions - no offense).
2026-01-04T17:02:53.126Z #7
Kevin, your resistance to energetic solutions is part of the problem! That high CYA is literally clouding your pool's aura. Before you 'slam' with more chemicals, try a full moon cleansing swim. The lunar energy can reset your water's balance. I've seen it work for three clients this season.
2026-01-04T17:12:53.126Z #8
Kevin, CYA of 70 means your minimum FC should be 5 ppm, not the 1-3 ppm most people target. Your shock level should be 28 ppm FC. Use liquid chlorine for the SLAM process since the Intellichlor can't produce that much that fast. Test every few hours during daylight. And ignore the 'energetic' advice - chloramines are measurable chemical compounds, not bad vibes.

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