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Pool Opening

Pool Opening - The Doheny's Difference

It's Opening Time! We know there's nothing more exciting for a pool owner than opening time and we're your one-stop shop for all your pool opening needs. We guarantee the best lowest prices. 

Up to 40% OFF Pool Chemicals

Chlorine & BromineChlorine & Bromine

Chlorine & Bromine

Low as $3.45/lb

Start-Up KitsStart-Up Kits

Start-Up Kits

Starting at $28.97

ShockShock

Shock

Up to $70 Off

AlgaecidesAlgaecides

Algaecide

Up to 10% Off

BalancersBalancers

Balancers

Up to 25% Off

All ChemicalsAll Chemicals

All Chemicals

Up to 40% Off

Up to 40% OFF Pool Equipment

PumpsPumps
FiltersFilters
HeatersHeaters
CleanersCleaners
Salt SystemsSalt Systems
Chemical FeedersChemical Feeders

Up to 20% OFF Pool Maintenance

Piant & Deck CoatingsPiant & Deck Coatings

Epoxy  |  Rubber

Acrylic  |  Water Based

Buy More. Save More.

Vacuum HeadsVacuum Heads

Vacuum Heads

Up to 20% Off

Rakes & SkimmersRakes & Skimmers

Rakes & Skimmers

Up to 20% Off

BrushesBrushes

Brushes

Up to 20% Off

HosesHoses

Hoses

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Maintenance KitsMaintenance Kits

Maintenance Kits

Up to 20% Off

Up to 20% OFF Solar Covers & Accessories

All Solar CoversAll Solar Covers

2Clear-Tek Micro Bubble Solar Covers

Above Ground Covers  |  Inground Covers

20% Off Solar Covers

Solar ReelsSolar Reels
All Solar AccessoriesAll Solar Accessories
All Solar AlternativesAll Solar Alternatives

Up to 20% OFF Pool Accessories

Lighting & FountainsLighting & Fountains
Storage & FencingStorage & Fencing
LaddersLadders
stepssteps
Slides & Diving BoardsSlides & Diving Boards
Alarms, Timers & ThermometersAlarms, Timers & Thermometers
Above Ground Vinyl Pool LinersAbove Ground Vinyl Pool Liners
Inground Vinyl Pool LinersInground Vinyl Pool Liners
Sun-Shelf In-Pool LoungersSun-Shelf In-Pool Loungers
Toys, Games, Floats & GogglesToys, Games, Floats & Goggles
PartsParts

Up to 20% OFF Swimming Pools

Complete Pool PackagesComplete Pool Packages
Inground PoolsInground Pools
Intex PoolsIntex Pools
SpasSpas

Video: The Ultimate Guide on How to Open Your Pool

Video: How to Use a Doheny's Start-Up Kit

BEST SELLERS

Doheny's Pool Start-Up Kit - #3 up to 30,000 Gallons
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 $58.49 Was $64.99
Doheny's 3 in Chlorine Tabs, 50 lb
Sale
 $172.99 Was $229.99
Doheny's Super Pool Shock, 12 lb
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 $49.99 Was $89.99
Doheny's Trap-It Pool Skimmer
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Swimline Beaded Pool Liner, 48 in Wall, 15 ft Round, 20 Gauge, Solid Blue
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Doheny's Foam Float, 1-1/2 Inch Thick, Bahama Blue
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Doheny's Standard Leaf Skimmer - 12 in. x 11.5 in.
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 $12.49
Doheny's Deluxe Vacuum Head for Vinyl Pool Liners
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 $29.69 Was $32.99
Small Figure 4 Hand Rails, Set of 2
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 $307.99
SR Smith TrueTread Specialty Diving Boards, 6 ft, Gray
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SR Smith Typhoon Pool Slide, Right Turn, Sandstone
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Economy Pool Step
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 $229.99 Was $249.99
Doheny's Skimmer System, Square
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 $46.99
Doheny's Above Ground Maintenance Kit, Standard
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 $57.17 Was $71.46

Pool Opening & Start-Up Kits

Pool opening is a special time, and it's important to do things right from the beginning so your water is healthy throughout the season. At Doheny’s, we carry a huge variety of opening supplies from the best brands in the business. Equipped with quality pool algaecide, clarifier, shock treatments, pool test strips, and more, our swimming pool kits will make sure your pool is perfectly prepped for months of enjoyment and fun - all available at unbeatable prices!

Pool Start-Up Chemicals

Doheny's Pool Start-Up Kits

For a convenient, all-in-one solution, Doheny's Pool Start-Up Kits include essential chemicals in pre-measured amounts, making spring pool opening faster and easier. Our kits are conveniently sized based on your pool’s total volume, with specialized options for pools up to 10,000, 20,000, and 30,000 gallons. If your pool capacity is higher than these sizes, we recommend buying the larger kit or combining two kits to ensure your water is properly treated. Not sure of your size? Use our guide on How to Calculate Pool Volume.

Doheny's High-Quality Pool Shock

A successful pool opening requires several key chemicals to ensure the water is safe and clear. We recommend starting with a high-quality Pool Shock to eliminate bacteria, followed by a preventative Algaecide to stop blooms before they start. You will also need Water Balancers (pH, Alkalinity, and Calcium Hardness) and Clarifiers/Enzymes to ensure crystal-clear water for your first swim.

Opening Maintenance & Equipment

Replacement Filter Cartridges

Whether you need to replace your pool filter cartridge depends on the condition of your current filter. If you noticed reduced flow or cloudy water at the end of last season, it is best to start with a fresh replacement or deep-clean your D.E./Sand filter. It is always good practice to have a second filter cartridge at the ready to rotate during cleaning. If your entire system is showing significant wear, upgrading to a more efficient pool filter can save you time and chemical costs throughout the summer.

High-Efficiency Pool Pumps

Circulation is key to a successful opening. You should run your pool pump and filter system continuously for at least 24 hours after adding your start-up chemicals. This ensures the shock and algaecide are fully distributed and allows the filter to clear out the initial debris. Getting ahead of rising water temperatures by opening early in the spring helps prevent algae growth and makes balancing your pool much easier.

High-quality, reliable pool opening supplies make it easy to maintain your swimming pool, keeping it clean and safe for your friends and family to enjoy all season long. When you choose swimming pool start-up kits from Doheny’s for your above ground or inground pool, you can rest assured that you are getting the best supplies available from the most knowledgeable experts in the business.

Frequently Asked Questions about Pool Opening

Q. What is the best time of year to open my swimming pool?

A. In general, opening your pool earlier in the spring is best. Getting ahead of rising water temperatures helps prevent algae growth and makes balancing your pool much easier.

Q. What essential chemicals do I need to open my pool?

A. A successful pool opening requires several key chemicals to ensure the water is safe and clear. We recommend starting with a high-quality Pool Shock to eliminate bacteria, followed by a preventative Algaecide to stop blooms before they start. You will also need Water Balancers (pH, Alkalinity, and Calcium Hardness) and Clarifiers/Enzymes to ensure crystal-clear water for your first swim. For a convenient, all-in-one solution, Pool Start-Up Kits include these essential chemicals in pre-measured amounts.

Q. How do I choose the right Doheny’s Pool Start-Up Kit?

A. Our kits are conveniently sized based on your pool’s total volume. We offer specialized Pool Start-Up Kits for pools up to 10,000, 20,000, and 30,000 gallons. To ensure you have the correct chemical concentrations, use our guide on How to Calculate Pool Volume. If your pool capacity is higher than these sizes, always buy the larger kit size or combine two kits.

Q. Do I need to replace my pool filter cartridge at the start of the season?

A. It depends on the condition of your current filter. If you noticed reduced flow or cloudy water at the end of last season, it is best to start with a fresh replacement filter cartridge. It is good practice to have a second filter cartridge at the ready to rotate during cleaning.

Q. How long should I run my pump after adding opening chemicals?

A. You should run your pool pump and filter system continuously for at least 24 hours after adding your start-up chemicals. This ensures the shock and algaecide are fully distributed and allows the filter to clear out the initial debris.

Doheny's is #1 in Quality, Price & Service

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Family owned since 1967, your satisfaction is our #1 priority. That's why we're America's leading pool supply.
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