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Featured Blog Posts (31)

What pH is Best for Pools?

Experienced service techs know that the pH in many of their pools generally rises above 7.8 within four to seven days following chemical treatments.  It is a chemistry reality that when water contains 80 ppm to 120 ppm of carbonate alkalinity, and is left alone and untreated by additional chemicals, the pH will rise to 8.0, and sometimes as high as 8.4 and stay there until chemically treated again. 

What does this mean?  It means that thousands upon thousands of residential pools are…


Added by Kim Skinner on August 3, 2016 at 9:42am — 3 Comments

How White Pool Plaster Can Turn Gray

One would think that when mixing white cement with white limestone aggregate, the final pool plaster product would always be white. But that is not always the case.

Unfortunately, white pool plaster sometimes turns gray (or grey) either immediately or a few months after the pool is filled with water. So what causes that to happen?

The concrete/cement industry has documented that late hard troweling can cause a cement surface to darken, mottle, and spot. Also, adding a high…


Added by Kim Skinner on December 9, 2013 at 4:34pm — No Comments

Why White Pool Plaster Can Turn Blotchy

Both white pool plaster coupons below have been in water for one year. Sometimes the water was slightly aggressive (negative LSI), and sometimes the water was slightly scale forming (positive LSI).

The top coupon was formed with only one percent calcium chloride (CC) added to the mix, and was properly troweled.  It remained a “uniform white” the entire time. 

The bottom coupon had 3% calcium chloride (CC) added, was late hard troweled, and also received some wet (water)…


Added by Kim Skinner on December 14, 2013 at 12:03pm — No Comments

The Pool Industry Being Duped - Pool Owners Being Scammed

Years ago, pool service techs learned that aggressive water etches quality plaster surfaces uniformly - that it does not pick and choose some areas of the surface to etch, while leaving other areas untouched.

The cement/concrete industry documented that improper workmanship practices can cause cement surfaces to mottle, darken, discolor, deteriorate, streak, and spot.

Yet, in the 1980’s, when pool plastering companies began seeing white spots in some of their recently plastered…


Added by Kim Skinner on October 21, 2013 at 6:00pm — 1 Comment

Salt Pool Blamed for Plaster Cracking and Nodules

When a new white quartz pool in San Diego developed numerous shrinkage cracks and very rough and sharp calcium nodules everywhere, the plasterer drained the pool and sanded it, charging the pool owner one thousand dollars for the work. The crystalline nodules began to form again soon afterwards, so the plasterer told the pool owner that a pool plastering expert and consultant would perform an inspection to determine the cause.  The plaster inspector was also a long-time National Plasterers…


Added by Kim Skinner on May 9, 2013 at 3:10pm — 12 Comments

Mom and pops are crumbling, the customer is loosing!

       I was just reading the latest article in Aqua titled "Fight For A "Cleaner" Sales Channel" by Scott Webb. It was well laid out and I have made some responses to the article.

Here is the body of the article:

When Internet retailing began over two decades ago, traditional retailers with storefronts and parking lots and cash registers…


Added by Justin Gregoli on April 2, 2013 at 4:05pm — 2 Comments

I'm looking for your guidance and council....

I'm preparing today to chair APSP in November. You may already know we are deeply involved in strategic planning, searching for our CEO's successor in 18 months, and trying to become more relevant to the swimming pool / recreational water industry as a whole. I'd like your council. Please answer the following: What is your vision for a better future for the industry? (Rank order your reply 1-10 or as few or as many as you like)

Added by Steven Gorlin on June 8, 2012 at 1:50pm — 15 Comments

Fix The APSP

I want to fix the APSP!  Will you help?

My friend Steve Gorlin, is the APSP chairman elect and enters office soon.  There is also the upcoming change of the APSP's CEO with the exit of Bill Weber in 18 months.  These combined events create the best opportunity for real change in the APSP since the transition from the NSPI.

The APSP has done a LOT of good, and…


Added by Rex Richard on June 13, 2012 at 1:00pm — 21 Comments

NPC Contradictions - What's a Service Tech to do?

On one hand, the National Plasterers Council (NPC) claims that alkaline (positive SI) water during start-up causes a blotchy and smooth gray discoloration you sometimes see in new white plaster pools,1 and that an acid treatment (zero alkalinity) for a week is necessary to lighten the discoloration.2 Yet, hundreds (maybe thousands) of new pools are filled with hard tap water every year and don’t turn gray.  

On the other hand, the NPC also says that aggressive…


Added by Kim Skinner on April 13, 2012 at 9:30am — 1 Comment

BioFilm: The Hidden Accomplice

Biofilm: The Hidden  Accomplice…


Added by Wendy Purser on March 2, 2012 at 8:08am — 4 Comments

Vanishing Edge Mistakes... Symptomatic Of A Deeper Problem

The following article addresses a challenge we often face in this industry.  A challenge with a solution..., and the solution will open doors to more business and success for all. 


First, I hesitated to write this as I know there will be some, who don't know me and will think I "being negative" or "uncaring", but that is not so.  It is because I care deeply about both the industry and all of us who represent it that I created the Pool Genius Network,…


Added by Rex Richard on February 26, 2012 at 3:00pm — 6 Comments

What Do I Do With Google+

Ok... by now you have probably heard of Google+...  If not it's time to get acquainted! 

Link to a video G+ overview I created!


Google+ is a new social network, and in my opinion it is the first of the Social 3.0 networks to arise.  It is WAY more powerful, more…


Added by Rex Richard on July 15, 2011 at 2:30pm — 1 Comment

"Contesting" Your Success

I have been targeted by a lot of contests lately, and I have to tell you, I find it quite exciting. When I have a chance to win something...and it can really be just about anything...I all of a sudden have a strong and fervent desire to WIN!

I don't think I am alone. I may be one of the few who starts living my life according to the prize I am [not] guaranteed to win, but I think most people are fairly jazzed by the…


Added by Monique Nelson on January 13, 2011 at 6:03pm — 13 Comments

Is Granular Activated Carbon (GAC) Filtration Causing Cancer?

Dear fellow Pool Geniuses,

My friend and water chemistry researcher, Alan Lewis, just published this alert relating to the potential dangers of "GAC" filtration.

You can read the information posted here:


This is important as many of you have "GAC" filters on your home purifying your drinking water, and some of you may use "GAC" in conjuction… Continue

Added by Rex Richard on October 30, 2010 at 10:00am — 2 Comments


The following article is published with permission by it's author Alan Lewis.

An overview of recent research and knowledge by Alan Lewis

Pool and Spa owners and maintenance people are concerned about the need to keep the pool

water safe and healthy at all times. Most know that…


Added by Rex Richard on October 30, 2010 at 8:48am — 6 Comments

Another Look at Hydroxyl Radicals

The following is posted with permission of the author "Alan Lewis".

Though I had previously communicated via email, I had the pleasure of meeting Alan in person at the 2010 World Aquatic Health Conference. We had dinner together and spent an entire evening talking. He has much to share and I hope you will take a brief moment to read his article. I have found it both thought provoking and informative.

Hydroxyl Radicals… Continue

Added by Rex Richard on October 9, 2010 at 4:19pm — 7 Comments

Gray Mottling Discoloration #3

Gray (or grey) mottling discoloration which occasionally occurs in plaster swimming pools may also occasionally occur on other cement flatwork, including things like driveways and sidewalks. According to the American Concrete Institute and the Portland Cement Association, adding calcium chloride and troweling concrete too late…


Added by Kim Skinner on September 17, 2010 at 12:39pm — 6 Comments

Gray Mottling Discoloration of Plaster #1

Gray mottling discolorations occasionally occur in new white plaster swimming pools, and cause of this plaster defect is being incorrectly assigned.

Gray (also spelled “grey”) or darkened blotchy discoloration of…


Added by Kim Skinner on September 9, 2010 at 11:08am — 2 Comments

Wall Street Journal Responds To "Trashing Pools" - Mentions APSP

Below is the Wall Street Journal editor response to the letter I sent regarding the article they posted titled "Taking a Bath On Your Pool".

Since writing my reply I have spoken to the APSP and determined the data they referenced was supplied by PK Data. If this is the data being provided we should seek to verify that the data is accurate. But the data is only part of the issue. The article was written to be a "ROI" article, yet makes statements… Continue

Added by Rex Richard on August 24, 2010 at 11:00am — 14 Comments

June Issue of Aqua features Rex, Brett and Mario

Just wanted to let everyone know there is an article in Aqua I wrote which gives a lot of advice on internet marketing based on lots of the information offered by Rex Richard, Brett Abbott and Mario Rosetti, this site and the Pool Genius Academy, and also some of the seminars given by these guys at our national and regional shows.

I tried to pull together some of the high points they have covered and I have researched to understand this subject better myself. If you want to…

Added by Merry Wise on May 28, 2010 at 6:01am — 3 Comments

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