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Thanks to all who responded to my issue. Lots of good info

In my previous lifetime about (50 years ago) I worked at a chemical company in Houston TX and we made commercial bleach ---- If I remember (and I might not--- senior moments) we used Sodium Hydroxide (caustic soda) (NAOH) and injected liquid chlorine (CL2) into it --- this created an exothermic...

Thanks --- I doubt if my pH has ever been "out of spec" except when doing stain removal at the end of the season every 3 or 4 years and their are no swimmers when I do that. If anything it'll go high (pH) if I'm not paying attention to the acid supply tank and it runs out. I think the Pool...

Yep -- see original post BBB --- 8.25% bleach from automatic controller based on ORP

See my signature for pool specs. Location Central PA BBB since 2004 And Ben :-) I add 8.25% bleach (Clorox) and Muriatic acid automatically with CAT based on ORP and pH. Now the issue. I started getting corrosion on the aluminum coping which appeared to be coming from the inside out (Concrete...

Just to add my two cents. I would advise against using the liquid solar covers. As mentioned above they are parafin disolved in alcohol. My experience was having little white globs of the parafin floating around in the pool. The pool store tried to convince me it was "White Mold" and I...

Your set-up sound like mine. I mix 1 jug Clorox Ultra with 1 jug pool water. I test the solution and normally it is around 3.55%. My tank (15 gallon, light brown & opaque) is outside and in the sun. I have tested when my tank is nearly empty (about a week after filling) and show almost no...

Ben' best Guess Chart Thought I'd throw in the chart I developed from Ben's and some of Richards wisdom --- I covers the "inbetweens".