Recent content by Cinquefoil

Ignore my signature tag. That's from 20 years ago. The leaky pool is my son's.

I need a new liner, but that's a project for next year. I'm trying to find a serious leak. 33,000 gal 40x20 in-ground pool, vinyl liner. The leak is 70-100 gallons per hour, 2 inches per day, with the pump on or off, and the pump valves open or closed. The pool will drain itself below the...

Dumping sufficient water is more a psychological barrier than anything else. But we achieved success anyway. It's just taking extra days. Pool was clear to the bottom of the deep end by Saturday morning, and his family swam all weekend (and invited us over this evening for a swim and...

Friday night update: Pool is much clearer. Can easily see the bottom in the nine-foot area. Chlorine still well above 10 ppm. CYA still above 100 ppm (even with half sample) but coming down. Added no bleach or chemicals since Monday. Backwashed, vacuumed entire pool to waste. Appears all...

Wednesday evening update: Pool is clearer. Can see the bottom in the shallow area. Chlorine still well above 10 ppm. CYA still well above 100 ppm (even with half sample). Added no chemicals today. Backwashed, vacuumed entire pool to waste. Lowered water roughly 8 inches and refilled. By my...

Yes, CYA still way over 100. Can only dump as much water each day as he will let me. So I plan to keep the bleach levels up to compensate until CYA comes down. Recognizing the futility of extrapolating the chlorine/CYA chart for CYA over 100, would these seem like reasonable targets? CYA Min...

Thank you for all the quick responses. Yes, I had an inkling what was needed but it very much helps to have your guidance and reassurance. I'm a hero. At least for today. We started treating Sunday night and friend woke up on Tuesday to find the green totally gone. First time since April...

As a volunteer at our neighborhood pool (165K gal, treated with 12% bleach and muriatic acid) I have learned enough over the years to be dangerous. But if you know a little more than the next guy you are labeled the expert around here, which is how I was invited to walk in to this situation at...