Have a spa installed higher than a pool with one system....the spa overflows into a resevoir and then thru an equalizing line to the pool.....the difficulty is the equalizing line is too small 1 1/2" and the resevoir overflows...there has been a sugg
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If you haven't checked it out, National Swimming Pool Foundation has a YouTube channel. We are posting seminars from past World Aquatic Health Conferences, including seminars on the MAHC, and a series of Healthy Body seminars from Dr. Bruce Becker's
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
Last spring we used the Aquafin 1K - 2K waterproofing solution on a replaster. This spring the whole pool delaminated and all the plaster came off in sheets. We contacted the manufacturer and sent samples to them asking for root cause analysis. Th
Some of you may have realized that some of the pool industry dosage charts for alkalinity adjustments differ with other charts. Here is why:
Previous to 1994, the dosage charts used in the pool industry for lowering alkalinity using muriatic acid and
Does anyone else see it as problematic that whenever a bill comes up that proposes licensing in the pool industry that the very organizations that make money from the licensing process are always the most vocal promoters?
We hear rhetoric like, “Wit
Exploding Filters
All types of swimming pool filters operate under pressure. If air is trapped in the filter and not released the air will continue to compress while the filter is operating. Small amounts of air can work its way out of the filter bu
A long, long time ago in a far, faraway place called the San Fernando Valley, I was chided by my boss with those words. I had dared ask to be paid by him to take apart, clean and reassemble filters. I was being paid $3.25 per visit to clean the pool
Yesterday I installed a Pentair SunTouch with an Intelliflo VS+ pump.
This is a nice simple setup that allows the pump to change speeds depending upon whether it needs more power to send the water up to the solar panels on the roof or more water to sa
Pool& Spa Safety Act Falls Short of Safety
In 2002 young Virginia Graeme Baker, granddaughter of Secretary of State James Baker was held underwater by suction in a spa and drowned. In NC at a homeowner’s association pool another young girl was eviscer
Biofilm: The Hidden Accomplice
So many times when I hear the word biofilm all I can conjure is the movie BioDome and how much the two are alike. They are two protective enclosures with living organisms that can contain within themselves one
The National Swimming Pool Foundation® (NSPF®) announces the Aquatic Play Feature™ (APF) online training course is now available in a new format, plus a Spanish version has also been launched. The new format offers better user interface, more interac
There's good news about swimming, it's good for your blood pressure & vascular function. Time to get into the pool! A new study published by the American Journal of Cardiology (http://www.ajconline.org/article/S0002-9149(11)03445-X/abstract) shows, i
This blog post is about the chemistry of combustion, not the chemistry of the pool and spa water that is being heated.
Combustion:
Pool and spa heaters burn either natural gas—typically methane (CH4) or propane (C3H8). Since both of these fuels are mad
Keiser University eCampus Publishes 2012 Class Schedule
for Online Aquatic Engineering Degree Program
Flexible schedule allows students around the globe
to earn a two-year Associate of Science Degree while they work.
Ft. Lauderdale, Florida, January 9,
 |
| Hayward H-series Heater |
Even the newest versions of the Hayward / Goldline AquaLogic controller (2.85) are not setup to select different speeds on the Intelliflo Pump.
It is possible, however, to get the two to work together using the first generation Pentair IntelliComm.
Pro
I ran across an interesting problem earlier this week. I was working on a newer style Hayward UFD (Universal Forced Draft) heater.
It would try to light, then--after three attempts--it would fail and give an IF (Ignition Fail) error.
Many problems can
When calculating the Saturation Index (SI), does a single low water parameter such as calcium hardness (CH), or a low carbonate alkalinity (C-ALK), make the water automatically aggressive to pool plaster, even when other water parameters are high eno
Meppy Hanzaa?
If you are hell bent and focused on being ‘Politically Correct’ (especially at this time of year) you may want to stop reading this article here.
I originally sat down to pen a letter of warm wishes and ‘Holiday/Season’s Wishes’ but my
