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Water Chemistry Discussions (22)

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Discussions Replies Latest Activity

Cyanuric Acid for Indoor Pools?

My supervisor thinks it is a great idea, but I'm not convinced.  I have been checking a lot of articles and suppliers, but I have yet to fi…

Started by Howard J Knight

3 Jan 19, 2017
Reply by Jory


Hi, We are using Aluminum Sulphate as flocculant for the pools we service. I am working on documenting dosage guides for all our products,…

Started by Frank H Dashti

8 Jun 21, 2016
Reply by Roohollah Akbari

Phosphates, Phosphate Removers and CuLator™ Metal Remover

Phosphates and Phosphate Removers Key Takeaways: Phosphate removers should be seen in the same vein as algaecides.  They inhibit algae gro…

Started by Richard A. Falk

57 Apr 24, 2013
Reply by Richard A. Falk

Combined Chlorine-what is it exactly?

I have recently come across the term "combined chlorine" as opposed to chloramines. In one context I was talking with a manufacturer's rep…

Started by David Rockwell

6 Dec 29, 2012
Reply by Richard A. Falk

Do you want to open your business in China ?--A huge and potential market!

More Renowned Associations Support Sauna&Spa&Pool China 2013     Up to now, Sauna&Spa&Pool China 2013 has got full support…

Started by Melod yXie

0 Dec 4, 2012

The mysterious case of the disappearing CYA

Two years ago I installed a very large ozone system on a 72,000 gallon residential pool. The unit produces 27g/hr ozone in a sidestream con…

Started by David Rockwell

7 Oct 10, 2012
Reply by Rick Larson

Natural Swimming Pools (NSPs)

As noted in this article and in described in this PGN discussion, the first Natural Swimming Pool (NSP) has been approved in the U.S. for p…

Started by Richard A. Falk

1 Jul 27, 2012
Reply by John Pustai


Placeholder for a discussion topic on enzymes.

Started by Richard A. Falk

18 Jul 5, 2012
Reply by Aaron Heiss

Oxidation-Reduction Potential (ORP)

Key Takeaways: ORP from actual sensors is a rough measurement of the net potential of the water to oxidize (positive) or reduce (negative)…

Started by Richard A. Falk

6 Jun 11, 2012
Reply by Richard A. Falk

Breakpoint Chlorination

Key Takeaways: In properly chlorinated pools and spas, breakpoint chlorination is continuous and does not get "stuck". The rule for raisin…

Started by Richard A. Falk

4 May 29, 2012
Reply by Richard A. Falk


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