HTH Pool Shock, Cal Hypo Formula, 13.3oz, Pack of 2 | Swimming Pool Care | Chlorinator | Boosts Chlorine Levels

The HTH 52031 Pool Care Shock worked very well for quickly clearing up cloudy water and boosting chlorine levels in our pool. After using it, the water looked noticeably cleaner and fresher within a short amount of time. The product dissolves fairly quickly and was easy to apply following the directions on the package. It helped control algae and that strong “pool smell” that usually happens when chlorine levels are off balance. I also liked that it restored water clarity without requiring multiple treatments. This shock treatment is especially useful after heavy pool use, rainstorms, or hot weather when chlorine levels tend to drop faster. The packaging was convenient, and the product feels reliable for regular pool maintenance. Pros: Quickly boosts chlorine levels Helps clear cloudy water Effective against algae and odors Easy to use Good for routine pool maintenance Cons: Strong chlorine smell during application Best results require proper water balance and testing Overall, this is a dependable pool shock treatment that helps keep pool water clean, clear, and swim-ready with minimal hassle.

I’m very pleased with the HTH 52030B Swimming Pool Care Shock! This product does exactly what it promises—quickly boosts chlorine levels and gets the pool back to looking clean and clear in no time. I’ve used it regularly, and it works fast to clear up cloudy water and keep everything sanitized. It’s especially helpful after heavy pool use or after a storm when the water needs a quick refresh. Just one treatment makes a noticeable difference. The application is simple and straightforward, which makes pool maintenance a lot less stressful. I also like that it’s reliable—you can count on consistent results every time. Overall, this is a must-have for keeping your pool in great condition. Effective, easy to use, and a great addition to any pool care routine. Highly recommend!

I used this last year after coming home from a long international trip to a completely green pool and really I was impressed with how well it worked. My pool had been neglected for over two weeks while I was away and by the time I got home the water was fully green with visible algae growth. I added two bags of this shock around the perimeter of the pool in the evening with the filter running and brushed the pool afterward to help make sure everything dissolved completely. By the next morning, the pool had already changed from swamp green to a cloudy blue. It was not crystal clear yet, but the algae was clearly dead and the transformation overnight was dramatic. At that point I backwashed and rinsed my sand filter and a crazy amount of algae flushed out. I continued filtering nonstop, brushed the walls again, skimmed debris, and used socks over the inlet ports to catch the finer dead algae particles. Throughout the day the socks kept collecting thick layers of fine algae residue so I rinsed them several times as the filter continued running. By the following morning I could clearly see the liner pattern at the bottom of the pool again. After another day of backwashing, brushing, vacuuming, skimming, and filtering, the pool was completely clear and ready for the family to enjoy again. I think it’s important to mention that bringing a green pool back takes patience no matter what brand of shock you use. This is not an instant one-hour fix but the product absolutely did its job and worked quickly once the filter system had time to remove all the dead algae. For reference, I used this in a soft sided above ground pool with a sand filter system. The attached photos show the pool before treatment, the morning after shocking, the second day of filtering and cleaning, then the final clear result on day 3. Pros: Worked quickly on a severely green pool Noticeable overnight improvement Killed algae effectively Dissolved well after brushing Worked well with a sand filter setup Cons: Restoring a neglected pool still takes time and repeated filtering/backwashing

Good price and does a great job for my pool

It’s not the 6 in one type but did a pretty good job

Does the job! Nice handy package for easy use. Works well and keeps your water clear!

Great product, great price!

Good value. Works well. Much cheaper than Pinch a Penny. Saved alot using this.

It works perfectly to keep my pool clean