Determining pump size for my pool?

I'm trying to determine what size 2-speed pump to buy for my pool. I'd like to reduce my overall electric bill and low-speed filtering sounds appealing. I'd probably only use the high speed for the SPA. I've got an approx. 25,000 (guestimated volume) in-ground pool/spa combo that's something less than 7 years old (new house to us, previous owner had it installed, no other info available). It's currently got 2" PVC plumbing connected to a 2HP pump driving a 300sqft cartridge filter that normally runs about 15 PSI in the filter, but goes as high as 25 when the valves are set for the spa. There's about 20-25ft separation between pump and the furthest return and the pump is about 2-3 ft above the poolwater level. I run a Hayward Viper Pressure Side cleaner on a booster pump. What more do I need to know in order to determine which pump to buy (just getting a 2 HP max 2-speed is too simple an answer, I'm complicated that way...).

I'm actually surprised at the size of pump in there. A 1.5 hp would have sufficed, given the information you supplied. We built many pool/spa combos and never had an issue with using a Hayward Superpump 1.5. Our plumbing arrangements sound similar to what you have. This spa isn't an 8 person monster is it? Usually the add on spas are 4-6 and the number of jets only require a 1.5, but we have, on request put in a 2hp. Those customers can barely stay in the tub when it's on hi speed. You almost need seat belts and a helmet.

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Spas Pool Cartridge Article

Portable Spa Glossary

There are many parts in a portable spa. In your daily use and servicing you will come many terms and parts that may sound alien to you. To make sure you are not dumbfounded and can take care of your own portable spa we have compiled a glossary of terms to make sure you know your way around the portable spa.

Air Controller

The air control is a valve which controls the amount of air going into the outdoor spa s jetting system. With the air controller you can increase, decrease or completely turn off the air.

Clock Timer

Electro-mechanical portable spa control systems use timer clocks for speed pump circuit, which in turn takes care of the heat, filtration and other functions, you can set multiple cycle with this control.

Filters

Filters are one of the most important parts of the portable spa. They take care of the cleanliness of the spa pool and need to be maintained well. The portable spa s filter cartridge is usually housed in a canister. You also have disposable filters that have to be replaced from time to time.

Jets

The heart of all swim spas, the jets are water outlets that provide different effects in the water. They are installed in the portable spa to give you the very best deep tissue, Shiatsu, aromatherapy and neck, back and shoulder massages. They are adjustable and come in various shapes and sizes.

The Jet Pump

The jet pump is required for the spa water to move freely and evenly across the portable spa. It has a motor, impeller and a wet end.

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Ozonator

This is a water purification device. As the name suggests it produces ozone that helps keep the water clean. It is connected electrically to the Portable spa's controller. The ozone reaches the jet lines through an injection system.

Spa Control

The control is the keypad or remote control from where you can control all the spa functions like the pumps, heater and the jets.

To find out more about portable spa, or where you find them or purchase them visit http://www.scsindustries.com.au. One of the world s leading swim spas and portable spa developers, you find the best portable spas with them.

About the Author

Margarita Louis is an Interior Designer based in Sydney. He has over 20 years of experience in the industry specialising in Bathroom and Spa Designs. Please visit http://www.scsindustries.com.au

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