List of 10 best pool shock in 2020

Hey buddies!!!! Are you guys finding or wishing for the best pool shock suitable for your gorgeous swimming pool?? This article is all about that.An amazing swimming pool can surely change the view of your house and gives it a magnificent look but maintenance of a swimming pool isn’t that easy always. Cleaning of swimming pools are a tough job and just having a pool pump isn’t always effective

Now read the article carefully and get some knowledge about why we need a pool shock and what makes our pool dirty and unhealthy and what are the 10 best pool shocks available in the market. Let’s get started then…..

What is a pool shock ??

Pool shocks are granules of powdered chlorine which are added to the pool water to remove the algaes, chloramines i.e; combined molecules of chlorines,cloudy particles which gets added into the water through rain,bather dirts and invisible bacterias. 

It raises the level of free chlorine in water (10-30 ppm) by oxidising the offending or bonded contaminants. Now days there are chlorine free pool shocks are also available in the market having Potassium Monopersulfate.

in which purpose pool shocks are used ??

 The crystal clear clean water of a swimming pool is a pleasure to our eyes. But the pleasure can be hampered by algaes and some invisible contaminants like bacteria,chloramines and some organic chloramines like bather dirt and cloudy water occurs in the pool water. This molecules or contaminants disturbs the chemistry of water by increasing the level of bonded chlorine particles,phosphates and some organic molecules. 

That’s why pool shocking is very important to increase free chlorine levels and prevent the blooming of algaes and killing the bacterias and other organic molecules.

Which chemicals are mainly used as pool shock ??

Mostly chlorine containing chemicals are majorly used for shocking the pool. A chlorinated pool shock is the cheapest to buy and effective to kill algae and bacterias to purify the pool. Pool shock within a pH level of 7.2 – 7.4 is the most effective for sanitizing the pool water.

  1. Calcium Hypochlorite (Ca(ClO)2) : 

 The most cheapest and effective chlorinated pool shock chemical available in the market with 65% presence and 75% strength with a pH level of 12. This is a non stabilizer pool shock and reacts with sun. That’s why it shouldn’t be used while the sun rays are falling on the water i.e; mostly in night.

  1. Sodium Dichlor(C3Cl2N3NaO3) :

A pool shock which consists of Cyanuric Acid which protects the chemical reacting with Sun and stabilized in nature. The strength is 58% and has a neutral pH level. No calcium residue is present after the reactions.

  1. Potassium Monopersulfate (KHSO5) :           

A specific pool shock which is non chlorinated and is majorly used in the pools and spas which are bromine treated. Leaves no residue, doesn’t effects with Sun and oxidises water in a short and effective way by only adding fresh oxygen to it. 

List of 10 best pool shock 2020 :~

  1. DryTecCalcium Hypochlorite Chlorinating Shock Treatment :
drytec calcium hypochlorite chlorinating shock treatment

The best pool shock consisting 68% of Calcium Hypochlorite for removal of algae, killing of bacterias and destruction of organic contaminants from pool water. For best results maintain a pH level from 7.2 to 7.6. Maintains the total alkalinity within the range of 60 to 120 ppm and the calcium hardness level to 200 ppm. Use 1 pound per 10,000 gallons of water. Customer ratings are 4.8 / 5.

  1. Clorox Pool&Spa Shock :
Clorox Pool&Spa Shock

Another best pool shock which consists algae killing crystals. Kills and controls the blooming of green, black and mustard algae. Also clears cloudy water and clarifies bather dirts. Reduces chlorine odor and eye irritation. The pH balance of the water is controlled if the level of chlorine is between 1-4 ppm. A one pound bottle can be used for 12,000 gallons. The ratings varies from 4.5 / 5 to 4.7 / 5.

  1. Pool Essentials Shock Treatment :
Pool Essentials Shock Treatment

Budget friendly best pool shock for a chlorinated shocking treatment. Contains Trichlore chemical to sanitize and oxidise the pool water. Put into the pool skimmer or directly into the water. Doesn’t need to pre dissolve or to add with another chemical. If chlorine level exceeds 4 ppm then don’t swim after the cleaning. Customer ratings varies within 4.5 / 5 and 4.7 / 5.

  1. HTH Super Shock Treatment :
HTH Super Shock Treatment

The best pool shock to go with different types of pools like liner pools,Gunite pools and Saltwater pools also. Can apply directly to the pool to remove and destroy algaes and bacterias to balance the chlorine level in water (1-4 ppm). Crystal clear pool water within 24 hrs and reduces chlorine odor and eye irritation. Non stabilization formula.1 bag is enough to treat a pool with 13,500 gallons of water. Ratings are 4.5 / 5 to 4.7 / 5.

  1. In The Swim Chlorine Pool Shock :
In The Swim Chlorine Pool Shock

Pool shock containing 68% Calcium Hypochlorite (Cal-Hypo) and visibly quick reactions to eliminate algaes, microbes,organic contaminants and pathogenic bacteria for a crystal clear healthy pool. Regular using based formulation to boost the chlorine level of pool water. 1 pound pack in enough for 10,000 gallons of water. Customer ratings are 4.8 / 5.

  1. Aqua Chem Shock :
Aqua Chem Shock

A quick effective pool shock which kills bacteria and pathogenic viruses, removes and destroys blooming algaes and sanitizes the pool with chlorinated formulation. Makes water sparkling one and maintains the pH balance just in 15 minutes. Also reduce chlorine odor and eye irritation. The amount of active chlorine is only 39%.

Customer ratings are 4.5 / 5.

  1. Kem-Tek Super Shock :
Kem-Tek Super Shock

Super chlorinated pool shock with quick reaction to kill the bacterias and organic contaminants and make a crystal clear sparkling pool within 15 minutes. As it has excess amount of chlorine it should be used in evening or at night. Should be used on weekly basis. One bag of super shock is enoug na to.h for treating 20,000 gallons of water. 60.3% chlorine is formulated. Not to be used in skimmer. Customer ratings 4.5 / 5.

  1. Zappit 73% Cal Hypo Pool Shock :
Zappit 73% Cal Hypo Pool Shock

Another Super chlorinator containing 73% Calcium Hypochlorite with 70% of free chlorine. Quickly dissolving granular formula for cleaning and sanitizing the pool water from algaes,bacterias, microbes and bather waste. 1 pound of this pool shock can boost the chlorine level to 2 ppm when poured in 40,000 gallon pool. Most customer rates it 4.4 / 5.

  1. In The Swim Cal-Chlor Chlorine Granular Pool shock : 
In The Swim Cal-Chlor Chlorine Granular Pool shock

Powerful pool shock consisting of 68% Calcium Hypochlorite for quick and effective sanitizing of the pool water from blooming algaes and micro contaminants. Needs to be pre dissolved otherwise will hamper the vinyl liners. Oxadises and chlorinated the water for a bacteria and virus free healthy pool. The Cal-Chlor granules should be poured at the deepest parts and it is non stabilized.

1 pound is used in 10,000 gallons of water. Customer ratings are 4.5 / 5.

  1. Spa Essentials Brominating Concentrate Granules :
Spa Essentials Brominating Concentrate Granules

A brominated granular material majorly used for spa pools and hot tubs. Chemical formulation is 82.5% of Sodium dichloro-s-triazinetrione and 14.7% Sodium bromide. Quick dissolving granules used for oxidising and sanitizing resulting in killing harmful bacteria and micro organisms for a clear and healthy spa pool. But the formulation is with bromine so nothing like in chlorinator happens here. Most of the customer rating is 4.7 / 5.


I hope you enjoyed the article and got a knowledge about pool shocks,the chemical formulations and get to know about the 10 best pool shocks of 2020 available in the market and in online.

If you haven’t then please go through every detail here and only after that but the best pool shock suitable for your swimming pool. Thank you for reading and the urge you showed for the article.

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