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Welcome to pool season! We are now offering FREE shipping Canada-wide on orders over $199.
Welcome to pool season! We are now offering FREE shipping Canada-wide on orders over $199.

HTH Extra Super Shock - 6kg - 30640

In-Store Exclusive
$96.99
SKU 10001124

limit 4 per order

Buy Online, Pickup in Store for FREE!

The shipping of this item is regulated; our carriers are unable to provide Home Delivery.

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 18 reviews
100%
(18)
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R
Ruth Elfassy
Great product

Good service and great help and informative staff, thank you

J
Joseph Alviano
Super Shock

This is the only shock I use. Dissolves quickly and the results are fantastic. Great product.

R
Ron

always reliable!

H
Howard Zhu

HTH Extra Super Shock - 6kg - 30640

P
Pio Neri
Shock works well.

Pretty strong don’t need much. It’s worth it to buy the pail over the packets.

Customer Reviews

Based on 18 reviews
100%
(18)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
R
Ruth Elfassy
Great product

Good service and great help and informative staff, thank you

J
Joseph Alviano
Super Shock

This is the only shock I use. Dissolves quickly and the results are fantastic. Great product.

R
Ron

always reliable!

H
Howard Zhu

HTH Extra Super Shock - 6kg - 30640

P
Pio Neri
Shock works well.

Pretty strong don’t need much. It’s worth it to buy the pail over the packets.