Pool Company in Sandown, NH

Swimming pools are a great way to cool down your body during hot weather. Whether it’s an above-ground or in-ground type, you’ll certainly have fun swimming in the water. However, it will need maintenance and repairs to ensure it stays clean and operational.

Fortunately, you can find everything you need to take care of it by choosing Daigle Pools. We are a comprehensive pool company that has served Sandown residents. You can also visit our physical store in Londonderry as clients from surrounding areas turn to us for quality pool products.

What Our Sandown Pool Company Offers

  • Pool Supplies Store. Our physical store stocks various high-grade pool supplies needed for pool maintenance. Whether you need pool chemicals to maintain the water balance, cleaning equipment, or fun pool accessories, we have a wide range to choose from. Our competent staff will assist you in choosing quality products for your pool.
  • Pool Equipment Repairs. Equipment failures can stop you from swimming in the pool. We offer pool repair services for all pool equipment, including pumps, heaters, automatic pool cleaners, and more. Our team of experts is skilled at diagnosing issues effectively and providing solutions to keep your equipment running smoothly again.
  • Pool Upgrades. Over time, pool components can wear out and not function anymore. Our pool services can breathe new life into your backyard swimming pool. From replacing faded liners to fixing broken filters that affect water clarity, our swimming pool contractor can handle different aspects of upgrades.
  • Leak Detection Services. Leaks can be tough, leading to water loss and increased maintenance costs. Our professionals use modern technology and techniques to find leaks in your pool swiftly and accurately. Once we find them, we can proceed with the essential repairs to guarantee your pool stays watertight and efficient.
  • Pool Maintenance Education. After installing your dream pool, owners must know how to maintain it properly. We provide education and guidance on pool maintenance to keep your pool in top condition. This includes instructions on regular cleaning, chemical balancing, and preventative measures to avoid common issues. Our goal is to give you the know-how to enjoy a clean and safe swimming environment throughout the year.
  • Pool Construction. What’s great about us as a swimming pool contractor is we can construct a brand new swimming pool on your property. We have provided pool renovation services to clients and built above-ground, in-ground, and even saltwater pools. Our team of pool designers also uses quality materials to build your pool, so you will never see any imperfections once we complete it.

Types of Pool Chemicals


Chlorine is a sanitizer that kills bacteria, algae, and microorganisms in the pool water. It’s the most popular and widely used pool disinfectant.

  • Types. Available in liquid, granular, and tablet. Trichlor tablets are slow-dissolving and typically used in a floating chlorine feeder or inline chlorinator. Dichlor is fast-dissolving and often used for shock treatments.
  • Usage. Regular measurement and dosage adjustment are needed to maintain a proper chlorine level, typically between 1 and 3 ppm (parts per million).


Similar to chlorine, bromine is a sanitizer and disinfectant. It’s more stable at higher temperatures and is often used in spas and hot tubs.

  • Types. It comes primarily in tablets that work in a feeder or floater.
  • Usage. Bromine is generally used at a level of 3-5 ppm. It is effective in a wider pH range than chlorine.

pH Adjusters

Maintaining proper pH levels (typically between 7.2 and 7.8) is needed for the effectiveness of sanitizers and the swimmer’s comfort.

  • Types. Includes pH increasers (usually sodium carbonate or soda ash) and pH decreasers (muriatic acid or sodium bisulfate).
  • Usage. Test water regularly and adjust as needed to keep the pH within the suggested range.

Alkalinity Increasers

They are used to stabilize the pH level by maintaining total alkalinity within the range of 80-120 ppm.

  • Types. Sodium bicarbonate is commonly used.
  • Usage. Adjusting total alkalinity prevents rapid pH swings and maintains water balance.

Calcium Hardness Enhancers

These chemicals increase the pool water’s calcium hardness, preventing damage to the pool surfaces and equipment. Ideal calcium hardness levels are typically between 200 and 400 ppm.

  • Types. Usually, calcium chloride is used.
  • Usage. Test calcium levels and add as required, especially in areas with naturally soft water.

Cyanuric Acid (Stabilizer or Conditioner)

Protects chlorine from sunlight degradation, prolonging its effectiveness.

  • Types. Available as granules or liquid.
  • Usage. Ideal levels of cyanuric acid are around 30-50 ppm. Avoid overusing, as high levels can reduce chlorine’s sanitizing power.


It prevents and kills algae, maintaining water clarity and sanitation.

  • Types. Copper-based algicides are common, but non-metallic options are also available.
  • Usage. Ensure compatibility with other chemical treatments to avoid staining or other issues.

Shock Treatments

Oxidizes contaminants, clears out chloramines, and restores water clarity and sanitation.

  • Types. Chlorinated shocks (e.g., calcium hypochlorite) and non-chlorine shocks (e.g., potassium monopersulfate).
  • Usage. Typically applied weekly or as needed after heavy use, rain, or temperature spikes.

Tips When Using Pool Chemicals

  • Safety Precautions. Always follow the manufacturer’s instructions. Handle chemicals carefully, wear protective gear as recommended (gloves and goggles), and never mix different chemicals unless directed. Store chemicals in a cool, dry place away from children and pets.
  • Monitoring. Regular pool water testing ensures the effectiveness of the chemicals and the safety of the water. This includes checking the pH, chlorine/bromine, total alkalinity, calcium hardness, and cyanuric acid levels.
  • Proper Ventilation. When handling and applying pool chemicals, ensure that the area is well-ventilated. This prevents the buildup of harmful fumes and reduces the risk of respiratory irritation or more serious health issues.
  • First Aid Measures. Be familiar with first aid procedures related to pool chemical exposure, such as flushing eyes with water in case of contact. You should also seek immediate medical attention if accidentally ingested. Always have emergency contact information readily available.
  • Avoid Direct Contact. Pool chemicals can be highly corrosive and cause skin irritation or burns. Always use appropriate protective equipment, such as gloves and goggles, when handling these substances to minimize direct contact and potential injuries.

Let Daigle Pools Service Your Swimming Pools in Sandown

You can trust Daigle Pools to offer professional swimming pool services. Our team of pool specialists working around Sandown has extensive experience and knowledge in maintaining and repairing your swimming pool. They have worked on different pool types throughout the years, providing clients with never-ending fun in the water. Contact our pool company if you want to ask for more details about swimming pool construction or the products we sell at our store.

Scroll to Top