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December 2017 Blog Posts (2)

Cal Poly Plaster Study Conclusions Shown to be Incorrect

Beginning in 2004, a series of plaster research studies were released by the National Plasterers Council (NPC), which they instigated and financially supported, and which were undertaken by the California Polytechnic State University in San Louis Obispo. In these studies, the researchers concluded that aggressive water conditions were the cause of “spot etching” and other plaster surface defects. The conclusions, and the quality of the research, have long been contested within the industry,…

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Added by Kim Skinner on December 6, 2017 at 10:18am — 1 Comment

The Future for pH and Chlorine Standards

It appears that the pool industry’s long-time recommended parameters for chlorine and pH levels will be changing in the near future.

The current range of 1 to 4 ppm for chlorine will likely be raised when pool water contains cyanuric acid (CYA), and the pH range will be broadened beyond the current limited range of 7.2 to 7.8. The reason for this change is due to a new understanding of the science of stabilized pool water.

Some years ago, Richard Falk (known as Chemgeek on pool…

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Added by Kim Skinner on December 4, 2017 at 12:28pm — 7 Comments

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kevox712 is now a member of Pool Genius Network
Tuesday
Kim Skinner commented on Kim Skinner's blog post Plaster Finishes Should Last 20 Years
"Thanks Kevin, I like hearing that there are good plaster companies out there, and that they do good…"
Monday
Kevin Misley commented on Kim Skinner's blog post Plaster Finishes Should Last 20 Years
"Great info Kim. My plaster contractor will tent my pools if any threat of rain is present and also…"
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Lyle Watson replied to Ben Jewell's discussion Open Pit DE Vacuum Filters
"I worked on several of these systems, many, many years ago. Are you still seeking…"
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Richard A. Falk commented on Richard A. Falk's group Water Chemistry
"Thanks Lester.  This is actually the second time they ran the article describing the history…"
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Lester Eric Brehm commented on Richard A. Falk's group Water Chemistry
"Congratulations for getting some credit for your work on CYA in Service Industry News ! !"
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Kevin Misley replied to John McGehee's discussion Issues with using rainwater for everything pool construction and maintenance related
"John About 7-8 years ago, I was asked by a GC to bid on a project whereas a college was expanding…"
Feb 12
Kim Skinner posted a blog post

Plaster Finishes Should Last 20 Years

All pool plaster finishes should last 20 years or more. However, some last only 5 to 7 years, and…See More
Feb 11

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