Ratings & Reviews for HTH 16-oz Cal Hypo Pool Shock

Works great.

[This review was collected as part of a promotion.] This is another great product from the HTH family of pool care supplies. The one pound bags are perfect for my pool. The shock dissolves nicely so that I don't have to stir it up off the bottom of the pool.

Great results

[This review was collected as part of a promotion.] Used the shock to bring my pool back to life and could see results within 30 minutes. Very impressed with this product. Easy to use and distribute as instructed. Instructions were easy to read and follow.

6 in 1 amazing

[This review was collected as part of a promotion.] This makes my life a whole lot more simple 6 in 1 cuts out a lot of my other duties as a dad who owns a pool. Definitely worth your money. These chemicals are the only chemicals I use, they are always quality and work like a charm. Each and everyone of there chemicals are a breeze to use as the direction will walk you through the process

Crystal Clear

[This review was collected as part of a promotion.] Rainy weather can wreak havoc on the state of your pool. The water will become dirty and will cause algae, stains & scales, and bacteria to build quickly. With HTH Pool Care Shock Ultra, I can clear up any green algae within 24 hours and manually vacuum out my pool to maintain and look clean and clear. This is absolutely necessary to help keep my pool with the proper ph balance and increase the chlorine levels when I can see bacteria and algae....

Great product

[This review was collected as part of a promotion.] I really like to use HTH products for my pool. This is a company that I really trust and look to use. My pool stays so crystal clear and beautiful when I use HTH products. There is no other shock that I would use

Clear as clear can be

[This review was collected as part of a promotion.] We have been using this in our above group pool for years and have always had great results. I love that it is pre measured and the instructions are easy to follow. Couldn't ask for better results. Highly recommended.

Clean Pool!

[This review was collected as part of a promotion.] I used the HTH Shock Advanced for my 30,000 gallon in ground pool. It did just what it said it would do....kept the water clear and kept the algae away. It said on the bag a "no chlorine lock", but I honestly don't know exactly what that is. I used it for 3 weeks straight, once a week. I have used HTH products multiple times and have been happy with almost all of the products I used. The weekly Shock Advanced is something I will continue t...

works well

[This review was collected as part of a promotion.] We shock probably once a week, and this bag does great every time. Easy to dispense into water and by morning it has dropped all the yuck to the bottom so its easy to vacuum. Crystal clear water after that.

Great product

[This review was collected as part of a promotion.] Got this to try since we could not find our usual and our pool was in pretty sad shape and needed help asap! Put a couple in along with a gallon of chlorine and ran pump continuously and after 24 hours it cleared up tremendously!

Great Product

[This review was collected as part of a promotion.] HTH Pool Shock Advanced is a great product. It helps clear the hazy and dull water quickly. It works great in the swimming pool and kills algae. We use it weekly for best results but it should be put in 1 day before you use the pool.

Great product!

[This review was collected as part of a promotion.] We have used this product at least once a week or after a good rain fall. The HTH pool care shock is one of the best products to be using. This product will take care of 95% of your pool problems. It helps keep your pool turning green by preventing bacteria and algae from growing. Place the bag contents into the poor and watch the magic happen!

HTH Shock

[This review was collected as part of a promotion.] I’ve been using this HTH shock weekly for the last couple weeks and so far I’m really pleased. It’s help keep my pool clear and my levels have been good. The individual packs make it quick and easy to use but be careful because it will bleach clothing if it gets on you.

Good Shock

[This review was collected as part of a promotion.] We have a 12, 000 gallon pool and this shock works perfectly to clear up the green water after several days of rain we have had! I have loved all the products I’ve used by HTH and definitely recommend anything by them especially the shock. My water is back to crystal clear after one bag.

Worked Great

[This review was collected as part of a promotion.] This product worked great. Obviously there is not a lot of technology going into this product. But as far as pool shock goes, this product did a wonderful job in my pool. Water was very clear and clean when it was done doing it's job.

Crystal Clear Water

[This review was collected as part of a promotion.] HTH Pool Shock Advanced is highly effective and simple to use. My pool water was a bit cloudy, and this took care of the problem after one use. Within 24 hours my water was crystal clear. I like that it is a multi-functional product that works well on algae, prevents bacteria and keeps my water clear and healthy with weekly usage. Great product!!

Trusted because it works!

[This review was collected as part of a promotion.] HTH is my go-to brand for pool care. I know that the products I buy are going to work fast and effectively every time. I appreciate the convenience of buying in multipacks as well. I can buy once and know I’m set for the whole season. HTH pool shock always results in crystal clear sparkling water. There is no better shock for clean, healthy pools!

Works very quickly!

[This review was collected as part of a promotion.] This shock works very well in our above-ground pool. I put it in and it dissolves fast. Shock is one of the most important things you can use for your pool. As it helps kills bacteria and helps prevent bacteria. My pool was cloudy and kind of green I used 1 bag of shock and it cleared within an hour. It was nice and clear and a beautiful blue. I try to put a bag in every week or 2 weeks, Depending on how much rain we get. The HTH Pool Care Shoc...

Convenient and Works

[This review was collected as part of a promotion.] Having a pool is a lot of work and requires a great deal of chemicals to keep the water from becoming cloudy and staying blue. Wisconsin does not provide us with a long pool season. So we defiantly try to get the most out of it. Having pool chemicals that are both convenient and clears up the cloudy water and brings out the blue water is a must. The HTH Shock advanced is easy to use. At night we open the package and pour into the pool over a...

Shock ME

[This review was collected as part of a promotion.] The HTH Pool Care Shock has worked really well. We seem to get the same results as when we use higher priced shock products and we will be making the switch to HTH permanently. The packs are super convenient to use, basically once a week and we've been really happy with the results.

It shocks me how good it is

[This review was collected as part of a promotion.] The pool shock did an amazing job. One pack a week turned my green pool crystal clear and is keeping it that way. It's very easy to use and doesn't require any measuring. I can't believe how well the product worked!