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World’s Deepest Swimming Pool – Deepspot in Poland

World’s deepest swimming pool – Deepspot claims the title as the world’s deepest pool.

Pool Magazine Editor



Deepspot is the Deepest Swimming Pool in the World at 45 meters deep.
Deepspot is the deepest inground swimming pool in the world.

The World’s Deepest Swimming Pool title is now claimed by Deepspot, a swimming pool catering to Scuba Divers in Poland. The swimming pool boasts a depth of over 45 meters (approximately 148 feet deep). The swimming pool itself contains over 8,000 cubic meters of water. The pool designers spared no expense. With a whopping price tag of over $10.6 million dollars, this is one of the rarest custom pools we’ve ever seen.

The Deepspot in Poland is the World’s Deepest Swimming Pool

“There are no magnificent fish or coral reefs here, so it is no substitute for the sea. But it is definitely a good place to learn and to train in order to dive safely in open water”

Polish diving instructor Przemyslaw Kacprzak TOLD AFP

Deepspot sets a new World Record for Deepest Pool

The mammoth inground pool structure was built as a training facility for divers and features a “Blue Hole” running down its deepest point. The innovative pool contractors built in many fun nuances. There is even a small shipwreck inside the pool as well as underwater caves and Mayan ruins to explore.

World's Deepest Swimming Pool - Deepspot is the Deepest Swimming Pool in The World
The World’s Deepest Swimming Pool features underwater caves & Mayan ruins for divers to explore.

Deepspot recently opened despite massive Covid-19 restrictions in Poland to much anticipation in the local community. The facility features a viewing gallery tunnel and is planned to feature hotel rooms facing the interior of the swimming pool.

Deepspot claims the title as the world’s deepest pool from previous title holder – Y40 Deep Joy in Italy. It can rest easy for the time being, however there is a future title holder in England currently under construction called Blue Abyss that is supposed to be over 50 meters deep. It was due to be opened in 2022 but has been delayed due to the Covid-19 pandemic.

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Industry News

Pool & Spa Show Live Streaming

Pool Magazine Editor



Northeast Spa & Pool Association announces plans to live stream event in light of Covid-19 pandemic concerns.

The Northeast Spa and Pool Association announced it’s plans to transition the Pool & Spa Show in Atlantic City from an in-person event to a live streaming event in light of the recent Covid-19 pandemic. Every year over 10,000 participants gather for the NESPA Pool & Spa Show (Jan 26-28 2021). Convention attendees have the opportunity to meet with vendors, connect with peers and attend seminars. This year however, for the first time ever the organization announced it’s plan not to host an in-person event, citing safety concerns as the primarily issue.

The Convention Isn’t Cancelled, The Format Has Changed However Says NESPA

“Since last spring, we have known that we needed to have multiple options on the table to deliver the high-quality content and first-class experience that our attendees and exhibitors expect. We had hoped to have an in-person event, and worked hard with many stakeholders in Atlantic City as well as the Pool and Spa Industry to make that happen,” said Patricia McCormick, Show Manager for The Pool and Spa Show. 

“As the year ends, and keeping the safety and success of our friends in the industry in mind, we are pivoting to a live-streaming, interactive event.”

Patricia McCormick, Show Manager for The Pool and Spa Show

Instead they will be live streaming an interactive event from Atlantic City and promise attendees a unique experience they have never seen from traditional online meetings.

“Walt Disney famously said, ‘If you can dream it, you can do it,’ and the NESPA staff and leadership never cease dreaming of ways to improve the show, and folks will find that is never more true when they get to see The Pool and Spa Show experience,”

Amy Rullo, president of the Northeast Spa and Pool Association

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Pool News

Artificial Intelligence for Swimming Pools

Pool Magazine Editor



Artificial Intelligence for Swimming Pools

A wave of new AI (artificial intelligence) and IOT (internet of things) devices aim to help prevent drowning in residential and commercial swimming pools. Many custom pools now integrate smart technology devices such as sensors and alarms to prevent accidental drowning. As the technology advances, a few companies aim to make these products more mainstream.

Artifical Intelligence for Swimming Pools & Beaches Help Prevent Drownings

It’s clear that there is a demand for AI technology for lifeguards as well as for the pool industry. According to the World Health Organization, there were over 320,000 accidental drowning deaths in 2016. An Israeli company Sightbit is pioneering the technology with it’s revolutionary software which detects high risk areas and alerts lifeguards so they can act early to prevent a swimmer from drowning.

Lifeguard using the Sightbit drowning detection system. This system has also been deployed at commercial waterparks.

One solar powered device pool designers are using in residential swimming pools in addition to pool fences is the Coral Manta 3000 system by Coral Detection Systems. The technology utilizes underwater cameras to analyze and detect swimmers in a body of water. Co-Owner of the company and Olympic Gold Medalist, Bode Miller is passionate about the product. After losing his own 19 month old daughter in a tragic accident, he’s devoted considerable time and resources towards bringing pool safety to the front of the headlines. Pool service professionals universally have embraced the products plug & play ability.

AI For Swimming Pools - Read How Artificial Intelligence Can Help With Pool Safety
AI For Swimming Pools – Read How Artificial Intelligence Can Help With Pool Safety

“This system offers a new and critical layer of safety and provides peace of mind like no other pool safety device does,”

Eyal Golan, Founder & CEO of Coral Detection Systems

It’s clear that the spike in demand for pools this year will create a new flock of nascent pool owners. Pool Builders in general usually are quite aware of the latest pool safety products. As the technology for AI for Pool Safety becomes more prevalent.

We have added a few of these types of systems to inground pools this year. They can be pretty pricey so it hasn’t really hit mainstream yet.


Building Your Own IoT Pool Monitor

One Pool Magazine reader, Gerald Foray of Apple Hill, NJ wrote in. He assembled his own IoT pool safety device using a tutorial he watched on YouTube. Foray was able to build a swimming pool monitor utilizing IBM Watson IoT. He was able to create an alarm that would sound whenever someone jumps in the pool. The cost for building the device was certainly not cheap. Foray spent over $2,000 building his own prototype. Watch the tutorial below.

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Cleaning and Service Equipment and Supplies

Pool Metals and Metal Staining

Pool News



Pool Metals and Metal Staining

Metals are naturally existing elements found in every place; in water, soil and stones. Metals in soil and stones dissolve in acidic rainwater, which is then carried to surface water and groundwater. Through this, the dissolved metals find their way to pools and tubs when filled. Exposure of metals to water cause staining on pool surfaces and equipment. This article discusses the techniques to control the presence of pool metals. It also discusses the different kinds of metal staining and the relevant chemicals to eliminate and hinder stains.

Pool Metals and Metal Staining

Metals in pools and hot tub water

There are 91 existing metals, but only 6 are problematic to hot tubs and pools. The 6 metals include magnesium, copper, cobalt, iron, manganese and calcium. Here we will only discuss 4 that are cobalt, copper, magnesium and iron.

Fill water, inclusive of almost all municipal and well water supplies that fill hot tubs and pools, contains a few metals. It is advisable to test for metal concentration in source water before filling the hot tubs and pools.

Tests for iron and copper are easily accessible, though the majority only measures the free form of the dissolved metals. They also do not test the sequestered and complexed forms of dissolved metals. A two-phase metal test containing adequate reducing and releasing agents give better results on free, complexed and some oxidized metals.

Sources of metal contamination in the pool and hot tub water are plaster and pebble surfaces, water features, decking materials, metal equipment, galvanic corrosion, chemicals and runoff.

In addition, flagstone, marble and stone contain iron that leaches into the pool after every rainfall. Imbalanced water may cause the introduction of copper from heat exchangers found in gas-fired water heaters. Moreover, copper-based algaecides and mineral-based water treatment may be a source of pool metals. Plant fertilizers can also introduce metals when incorrectly applied or due to uncontrolled flooding. More sources of metal include irrigation methods with well water.

Preventing stains

Water Treatment

Avoid using untreated water with high metal concentration (higher than 1ppm) in hot tubs or pool. Treat the water when the metal concentration is higher than 0.2 ppm. Sediment filters (10 microns or less) eliminate the majority of the bigger oxidized particles. Use filters that have metal adsorbents to treat water, to minimize dissolved metals concentration.

Primary Sanitizers and Stabilizers

Maintain proper concentration of primary sanitizers and other similar stabilizers to prevent organic contaminants. These include; pathogens, non-hazardous bacteria and algae minimizing the need for a copper-based algaecide.

Bonding of Metals and Water

The majority of the pool and hot tub equipment are metal-made. For example, electrolytic halogen generators, the heating core of electric heat pump, gas-fired pool and hot tub heaters, ladders, light rings and handrails.

To enhance chemical and electrical safety, install a bonding system in the hot tub or pool. The bonding system involves joining the copper wire with all the metal elements and water combined. This minimizes electric potential difference. Lack of this system, enables dissolution of pool metals, causing staining that damages the equipment. This is the process known as galvanic corrosion and can heighten due to several factors such as salt water, stray direct current as well as its power supplies. Anodes (zinc metal) reduce the damage on the equipment but don’t deal with the cause of corrosion. Test the bonding system every year, or any other time there is corrosion.

Pool & Hot Tub pH

pH is the most vital yet most ignored factor in preventing metal release in water. Low pH water (below 7) is acidic and corrosive. Acidic water dissolves metals from the pool equipment.

Improper water chemistry harms pool surfaces and machinery. Always ensure to maintain an accurate pH, alkalinity (carbonate) and calcium (hardness). If inadequate, water draws carbonate and calcium from cementitious surfaces, discharging metals into the water.

Sequestering Agents

Sequestering agents join with the dissolved pool metals to reduce oxidation hence reduces staining. They chelate the metals, not eliminate them. They require a complex modern ultra filtration system to remove sequestered metal particles as the particles are too small for the pool filtration system. Add this agent on a regular basis, as a secondary disinfection and primary sanitizer systems keep on destroying them.

Ways to reduce metal concentration in hot tubs and pool water

  • Bind the metals using polymer and water-insoluble natural adsorbents
  • Filter the water through a reverse osmosis system
  • Remove and replace a part of the water with fresh metal-free water

Removing stains from the pool and hot tub surfaces

1. Metal stain removal from the surface

2. Chelation of the dissolved metals in the water with a sequestering agent

3. Elimination of the metals from the water.

To get rid of pool metals and metal stains, add oxalic acid, ascorbic acid and citric acid or a similar product into the pool water. An experienced pool service expert should only execute the use of Muriatic acid in the removal of metal stains as it can lead to permanent damage to the pool surface. Chelation of dissolved metals and minimizing concentrations of dissolved metal have been earlier tackled.

Figuring out the difference between metal stains and those by organic contamination can be difficult. For evaluation, establish the origin of the stain, asses the water chemistry and test the stain with either citric acid or ascorbic acid.

Note: Some organic stains, similar to those brought about by iron bacteria, vanish after treatment with ascorbic acid but return with the introduction of chlorine residuals.

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