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Welcome to pool season! We are your trusted resource for all pool and spa needs, supplying everything you need to open and maintain your pool. Shop now and be the first ones in the water this summer.
Welcome to pool season! We are your trusted resource for all pool and spa needs, supplying everything you need to open and maintain your pool. Shop now and be the first ones in the water this summer.

HTH Extra Super Shock - .454kg - 30318

$8.99
SKU 10001123
Shock at least once a week to maintain sparkling blue, crystal clear water. Use our premium shock products at least once a week to give your pool the boost of chlorine it needs, kill unwanted bacteria and algae, and keep your water as clean and clear as can be. Shocks are an essential problem solver as well a great preventive medicine for your pool.

FEATURES & BENEFITS
  • FAST ACTING AND POWERFUL!
  • 15% Stronger than regular HTH Shock!
  • Contains 75% available chlorine.
  • Fast dissolving, EXTRA FINE, formula is made from a patented process.
  • Ideal for weekly shock treatments and killing algae.
  • Calcium Hypochlorite
  • Always test and ensure pH is between 7.2 and 7.6 before shocking
  • Test chlorine levels regularly
  • Shock after heavy use of pool and after rain as rain can introduce organic contaminants

Customer Reviews

Based on 7 reviews
100%
(7)
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a
adrian harms

HTH Extra Super Shock - .454kg - 30318

T
Trudy Cope

Process was timely and smooth

M
Mark Barrett
Pool is open

It's hot

G
Glenn Gilbert
Opening

Shock worked very well.

m
marcelo puente

everything is fine. I have not had any problem. Nice attention, answers and help about what to do with the store closed.
I am very happy about that and thank you for the help (chemicals, how, when and what to do, even how to test the water
which I never done before.

Customer Reviews

Based on 7 reviews
100%
(7)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
a
adrian harms

HTH Extra Super Shock - .454kg - 30318

T
Trudy Cope

Process was timely and smooth

M
Mark Barrett
Pool is open

It's hot

G
Glenn Gilbert
Opening

Shock worked very well.

m
marcelo puente

everything is fine. I have not had any problem. Nice attention, answers and help about what to do with the store closed.
I am very happy about that and thank you for the help (chemicals, how, when and what to do, even how to test the water
which I never done before.