Ratings & Reviews for HTH 115.2-oz Cal Hypo Pool Shock

great product

Works great - definitely helped clear things up and get that nice blue hue back!

It’s okay

This works but you need to vacuum up the sand after cleaning. The sand then comes out again. It has been 2 weeks and I still have not been able to vacuum up all of the sand.

This is the best product we have ever used with our pool! It saves us so much money!

Turned the whole pool GREEN!!!

Try blue green instead of green to blue. This thing absolutely ruined my pool and it’s probably going to be a week before I can swim again. We had just a little bit of green algae around the edges of the pool we thought need treated and now the entire pool is green. Don’t buy it unless you’re prepared to have to drain and refill the pool.

FOLLOW INSTRUCTIONS

I was just reading the very few bad reviews on this product, and I don't understand how anybody could not get it right. It has very simple instructions. Balance your pH and alkalinity, read the instructions, and the product works beautifully. P.S. GREAT WORK, HTH! AWESOME PRODUCT!!!

Under filled product

I am extremely disappointed with both this product and the customer experience. I purchased the HTH Green to Blue Advanced II kit expecting it to work as advertised, but it did not. After investigating, I found that both bags of the Advanced II product were noticeably underfilled and did not contain the weight stated on the package. I believe this is the primary reason the treatment failed. After following the instructions exactly, my pool did not improve, and now I’m being told I need to purch...

Horrible product.

Did not do what it claimed. It created gobs of residue at the bottom of my pool without turning the water blue. The water's so cloudy I can't see the bottom. It's going to take forever to filter it out. I should have just stuck with excessive chlorine to shock the pool. Like a fool I bought three of these. Items delivered by Lowe's the same day. Delivered in the condition shown in the picture. All the boxes were wet and product bags were faded.

Green to blue

Best priduct i have used. It make my pool crystal clear.

Amazing!!

I had no idea this product existed. I have an algae battle at least once/ season and usually have to SLAM at high shock level for days. Well this worked so great- my pool went from green to clear in 24 hours. I did have to spend an hour manually vacuuming, but so worth it in my opinion.

Clear water

Clear diections and good results.

Works great

Works great

Weekly shock in summer time, kills algae.

Always used in my pool.

Great product

Works great. Cleared algae overnight. Pool looks great now.

From Duck Pond to Beautiful Blue Pool

This is a two-to-three-day project, but it really works! Algae bloom be-gone!

Amazing

We usually get a green pool once per season. This year it happened sooner than in the previous year and it hit extremely hard and so fast. I was quite panicked thinking there was no way to clear it up other than emptying the pool. Before we emptied the pool, I searched the internet for help. Luckily the first easy option I found was to use HTH Green to Blue Advanced. We decided to give it a try although we were very skeptical (especially when it said it worked in 24 hours). HTH, this is an...