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Keeping your swimming pool clean and clear can be a rough job, especially if you don’t have the right chemicals. Keep the basics on forearm for regular maintenance spil well spil anticipated water problems.

My little blog postbode today lists below all of the pool chemicals that every pool possessor should be familiar with, at the end is a brief list of pool chemicals that should be kept ter stock.


Thesis are the chemicals that you use to keep water sanitized and disinfected. There should be a onveranderlijk level of chlorine (or bromine) ter the water at all times, without a loterijlot of peaks and valleys.

TriChlor: 3” tabs, or 1” tabs or stuffs. With cyanuric acid. Add them to a chlorine floater or a installed chlorinator.

DiChlor: granular. With cyanuric acid. Powdered form acts quickly to chlorinate pools, fountains or spas.

Bromine: 1” tabs. Excellent for spas, works better te hot water, and can be regenerated by shocking. More pH stable spil well.

Cyanuric Acid: Liquid or dry chlorine stabilizer. Protects chlorine from harm by UV rays. Petite amounts are added to dichlor and trichlor, add reserve if pool wasgoed drained, to maintain 30-50 ppm. Drain some water and refill if CYA levels get much higher than 50 ppm.


Oxidizers are the secondary sanitizer, used every few weeks to kill algae and bacteria. Chlorine or Non-Chlorine shocks are ter a powdered form, just open the bag and pour it into the pool.

Calcium Hypochlorite: Cal Hypo pool shock is used to quickly sanitize pool water, boost chlorine levels and kill algae. Works best with a low pH level of around 7.Two.

Chlorine Free Shock: Granular potassium monopersulfate (non- chlorine). A quick acting oxygen based sanitizer that burns clean with no residue, and you can swim right after treatment.

Lithium Shock: Lithium hypochlorite. This one is good for pools with liners because it won’t bleach the liner, and also dissolves right away so is safe to swim right after treatment.

Water Balancers:

To keep your water te balance, you should test the pool several times vanaf week for chlorine and pH levels, and adjust spil needed. Test total alkalinity every few weeks or if you have pH troubles, and test calcium stiffness and cyanuric acid levels every month.

pH Increaser: Granular Spuitwater Ash. Increase pH when levels fall below 7.Two ppm. 1 lb of pH Up will raise pH about 1-click, from 7.Two to 7.Three for example, te 10000 gals of pool water.

pH Reducer: Granular Sodium Bisulfate, or Dry Acid. Reduce pH when levels rise above 7.6 ppm. Also used to lower total alkalinity.

1 lb pH Down will lower pH about 3-clicks, from 7.8 to 7.Five for example, te 10000 gals of pool water.

Alkalinity Increaser: Granular Sodium Bicarbonate. Raise total alkalinity when levels fall below 80 ppm. 1 lb of Alkalinity Increaser will raise TA by about Ten ppm, te 10000 gals of pool water.

Calcium Stiffness Increaser: Granular Calcium Chloride. Raise Calcium stiffness when levels fall below 150 ppm. 1 lb of Calcium Increaser will raise CH by about Ten ppm, ter 10000 gals of pool water.

Chlorine Neutralizer: Granular Sodium Thiosulfate. Use if chlorine concentration becomes too high. 1 lb of Thiosulfate will lower free chlorine levels by about Ten ppm, te 10000 gals of pool water.

Chemical Combo Packs: Pool Chemical packages you can choose from that include the tablets, shock, algaecide, and stain away you’ll need to carry you through your entire pool season. Thesis are a good way to get yourself began with the nude essentials.

Specialty Chemicals:

There are many specialty chemicals that can come ter handy when unexpected problems arise, or to keep your pool looking it’s best. This is one of the largest categories of pool chemicals, for every possible pool problem!

Algaecides: Some are copper based, most are non-metallic polymers. Helps to prevent algae from growing ter your pool – use pool shock to kill algae, and algaecides to keep it from returning.

Clarifiers: Clarifiers coagulate lil’ particles into thicker particles that can be trapped ter the pool filterzakje. Flocculants attract particles into strong clumps that bury to the floor for vacuuming to waste.

Enzymes: Enzymes like Pool Volmaakt pauze down oils and other forms of non-living organic contamination from the water, removing scum, oils and odors.

Filterzakje Cleaners: Used to clean sand, D.E., and cartridge filterzakje elements to keep your filterzakje working well. Eliminates oils, minerals, metals and other filterzakje clogging gunk.

Metal Magnets: Sequestering agents are used to lock-up trace metals from the water and keep them ter solution, so they don’t stain your pool surfaces.

Phosphate Removers: Products like PhosFree pauze down phosphates ter the water. Phosphates are the primary food source for algae. Without food, algae can’t get through.

Stain Removers: Prevents or liquidates surface stains, scaling, and colored water due to minerals and metals te the water. Wij have overheen 15 different pool stain chemicals.

Tile &, Vinyl Cleaner: Works fine to help liquidate oils and grease build up around the water line, or on furniture, skimmers, diving boards and glides. Pool Cleaner won’t affect pool chemistry.

Embark Up Kits and Closing Kits: When it comes to opening and closing the pool, or stocking up for the season, check out our chemical value packs that contains everything you need!

What Chemicals Should be Kept On-Hand?

Spil a ondergrens, the average pool will want to keep the following chemicals on palm – even if you use a salt chlorinator, you will need thesis other pool chemicals from time to time:

  • Chlorine tablets and pool shock
  • Pool pH Up and/or pH Down
  • Test strips or test kolenkit

Every pool will also need other chemicals to raise calcium, cyanuric or alkalinity levels, usually once vanaf year – and clarifiers, enzymes, algaecides can be an significant part of the overall routine, or are especially handy when you’re ter a pinch!

There’s lots to learn, with 12 categories of pool chemicals – you won’t need them all, but it’s significant to understand what they do, so that when you do need them, you know which chemical to use!

InTheSwim Staff Blogger

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What Chemicals are Needed for Pools? —, 12 Comments

Hello so I bought a intex 12′, by 36 pool and I’m so confused on what chemicals to use I have 3-1inch chlorine tablets te the filterzakje but I’m not sure how much of the shock to waterput ter the pool eyeing spil however the pool is petite and says it hold 1,485 gallons. I also have he non chlorine oxidizer which says to waterput 1lb for every Ten,000 gallons how much of that should I waterput ? Or should I buy the chlorine shock instead ? I Want to make sure the water is sanitized and safe to go into the pool.

Hi, you need a test kolenkit, if you dont’ have one already. Use enough tablets to create a consistent and onveranderlijk 1-2 ppm of chlorine ter the water. Your test lijm will tell you if you are using too many or not enough tablets. For the shock, either is OK (non-chlor or chlorine, but chlorine is best for algae killing, but both are suitable for bacteria and chloramine oxidation). Since it’s 1 lbs to 10K gallons, you only need about 1/Five of a pound, unless water conditions are bad, then maybe 1/Two lb, or if truly bad – perhaps the entire bag. If using less, be sure to seal the bag very tightly, pinning with several paperclips, and keeping ter a cool, dry place with no chance of spilling or contamination. Also significant for overall water health is your pH level, Test every few days and adjust spil needed, with pH up/ ph down chemicals, to keep the pH around 7.2-7.6. If you have trouble with this, check the total alkalinity level, it may be too high or too low.

Ms. Silvestri, I have an above ground Ten,000 gallon pool what do you recommend spil far what chemicals and their quantities I should use. Thank you for your help

Hi Leon, Every pool has its own chemical needs, but there are some collective chemicals that all pools need.

1. Chlorine Tablets, Trio″, size, used ter a chlorine floater. Use enough tablets (2-3 depending on water temp), to maintain a onveranderlijk 1-3 ppm chlorine, confirmed by regular testing. Very likely need 25 lbs vanaf season

Two. Chlorine Shock, 1 lb granular Cal Hypo. Use 1-2 bags, added by very first pouring the bags into a Five gal bucket of water and stirring to dissolve, then pour around pool. Used to kill visible algae, or to liquidate combined chlorine, kill bacteria missed by the tablets. Also useful if you run out of tablets and leave behind to refill the floater, add 1 bag (pre-dissolved to protect the liner) to raise chlorine level swift, then refill the floater and it will catch up. Very likely need 12 bags vanaf season.

Three. pH increaser, Sodawater Ash. Use to raise the pH level if it gets too low. Very likely need Ten lbs vanaf season. Keep pH at 7.2-7.6

Four. pH decreaser, Sodium Bisulfate. Use to lower the pH level and the Alkalinity level. Most likely need Ten lbs vanaf season. Keep Alkalinity at 80-120 ppm

Five. Cyanuric Acid, Stabilizer or Conditioner. Use to protect the chlorine from the zon. Need 2-3 lbs to raise cya level to 20-30 ppm, vanaf 10000 gals.

Depending on your initial water tests, you may also need alkalinity increaser (ondergrens Alkalinity is 80 ppm) and some Calcium Firmness increaser (ondergrens Calcium level is 150 ppm)

You’ll also need a reliable test kleefstof or test strips to test the chlorine and pH levels 2-3x vanaf week, Alkalinity and Calcium Stiffness 1-2x vanaf month.

Those are the basics. Some people find that they need to use an algaecide to assist the chlorine ter keeping algae under control, and some may need some help from clarifiers to help a petite pool filterzakje perform better.

I just bought a 14ft by 42 inch holds around 3500.oowhat chemicals do I need to treat it

Hi Alan, you will need to maintain a onveranderlijk and consistent chlorine level, and a good pH level. Chlorine can be added with a floating chlorinator, and a few chlorine tablets. when they dissolve, add two more. Because your pool filterzakje most likely is petite and not so effective, I would also recommend using a weekly addition of pool algaecide and clarifier, following label dosage.

Hello Ms.Silvestri, I purchased a Bestway 12′, x 36″, Rapid Set Inflatable Above Ground Pool w/ Filterzakje Pump and have not a clue what zuigeling of chemicals to use to treat the pool. The pool holds 2200 gallons of water and is all rubber. Please help?

Hi Robert, you can use a chlorine floater with 1-2 chlorine tablets vanaf week to keep the chlorine level up. You will also want to test the pH level regularly, with test strips, and may need to use pH up or pH down to adjust the level. A bottle of Algaecide 60+ would also be advised, to help your chlorine keep the water clear. Also, you can use liquid bleach (unscented) to raise the chlorine level higher, add Two cups of bleach vanaf week, te the evening, to kill anything that the tablets did not kill.

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