Chemical Services

At Hines Pool & Spa, we take pride in our pool chemistry knowledge and helping our customers understand how to keep their pool in peak condition.  Proper pool chemistry is critical to the safety of swimmers, as well as the life of a pool’s equipment and surface. We carry a full line or chemicals to help keep your pool operating and safe. If you need help, contact us or see our education page for training opportunities for both commercial and residential customers.

Water is balanced when it is not corrosive(acidic) or scale forming (alkaline). The three elements to balanced water is maintaining pH, Total Alkalinity, and Calcium Hardness. Chlorine is necessary as a sanitizer, but is not an element of balanced water.

Chemicals necessary for balanced water


  • Decrease - use Muratic Acid or Dry Acid(Sodium Bisulfate), sometimes referred to as pH Down or pH Decreaser
  • Increase - use Soda Ash(Sodium Carbonate), sometimes referred to as pH Up or pH Increaser

TA (Total Alkalinity)

  • Decrease - use Muratic Acid or Dry Acid(Sodium Bisulfate) **NOTE - call us for instructions on how to properly use these products to decrease alkalinity, also referred to as Alkalinity down or Alkalinity Decreaser
  • Increase - use Baking Soda(Sodium Bicarbonate), sometimes referred to as Alkalinity Up or Alkalinity Increaser


  • Decrease - you must dilute the pool water using fresh water with a low calcium content
  • Increase - add Calcium Carbonate


  1. Chlorine is the most common form of sanitizer used in swimming pools. Here are four(4) forms of chlorine - Sodium hypochlorite, Calcium hypochlorite, Dichlor, and Trichlor. The first difference is Sodium and Calcium are unstabilized Chlorine. Dichlor and Trichlor are stabilized. Stabilized chlorines have Cyanuric Acid which acts as a type of sunblock for the Chlorine. The sun will break down Chlorine causing it to burn off quicker; Cyanuric Acid slows this process down. Therefore, Dichlor and Trichlor are used in outdoor pools as tablets. Because indoor pools do not need to worry about the sun, and do not need Cyanuric Acid, they usually use the other 2.
  2. Sodium Hypochlorite is a liquid Chlorine and has around 10-12% available Chlorine. Available Chlorine (AC) is the amount of Chlorine released in the water to disinfect. Bleach, which contains Sodium Hypo, only has 5% AC which is why bleach is not a good pool disinfectant. Because of its liquid nature Sodium Hypo is usually applied to a pool through an automatic chemical feeder. Big water parks and large commercial pools are the common users of Sodium Hypochlorite.
    **SIDE NOTE: Salt pools are still Chlorine pool because the salt cell breaks the salt down into Sodium Hypochlorite.
  3. Calcium Hypochlorite is commonly seen as granular Chlorine but also is in tablet form. Calcium Hypo has an Available Chlorine (AC) of 40-78%. Calcium Hypo is used not only to shock a pool but is used in erosion feeders as the main way to disinfect a pool. Calcium Hypo is used regularly in both home and commercial pools and is usually what is seen on your local mart shelves.
    **SIDE NOTE: The difference between the Calcium Hypochlorite sold by HINES versus local mart stores is the AC level.Remember: the higher the Available Chlorine (AC) level the more disinfectant is going into your pool. The cost may be lower but so it the amount of chemical you’re getting.
  4. Trichlor and Dichlor are both stabilized Chlorines making them perfect for outdoor pools and are usually seen as pucks/tablets/sticks though granular forms are available. Their Available Chlorine (AC) level is usually around 80-90% and introduced to the water thru chemical feeders or skimmers. Because of their high AC level the granular form it commonly used to treat pool problems due to algae or a Chlorine demand.

OTHER Chemicals used in keeping your pool operating in peak condition

Algaecides - depending on the type of algae you have - GREEN, YELLOW, BLACK - we have the experience and products to help rid your pool of algae.
Clarifiers - bind tiny particles together allowing them to be filtered out by your filter.
Metal Out - prevents metal staining and helps clear discolored water caused by high metal or mineral content, especially in pools with salt pools
Phosphate remover - help remove phosphates which can contribute to algae blooms
Enzymes - effective way to eliminate oils, lotions and organic materials in pool water, reducing the maintenance required for filters or the need to shock the pool.
Click on Pool Calculators to find how much of which chemicals to add.
Use our Chemical / Cleaning Log for a Daily Maintenance Log file.



I use Hines for all my chemical needs, they are the Who Dat!

B., Satisfied Customer