Pool Care Shock Advanced, Swimming Pool Chemical Prevents Bacteria & Algae, Cal Hypo Formula, 1 lb (Pack of 12)

I recently purchased the HTH 52037 Swimming Pool Care Shock Advanced and have been thoroughly impressed with its performance. This swimming pool chemical has exceeded my expectations, providing excellent results at a fraction of the cost compared to the local pool store. The HTH 52037 Shock Advanced is a cal hypo formula that effectively restores clarity and cleanliness to my pool water. The 12-count pack offers ample supply for regular maintenance and shocking treatments. Each packet is conveniently pre-measured, making it easy to add the correct dosage without any guesswork. What truly stands out about this pool shock is its affordability. I was pleasantly surprised to find that the HTH 52037 Shock Advanced is significantly cheaper than similar products available at local pool stores. This affordability makes it a fantastic value for pool owners who want to maintain crystal-clear water without breaking the bank. In terms of performance, this pool shock delivers excellent results. It effectively eliminates contaminants, bacteria, and algae, leaving the pool water clean, fresh, and inviting. The cal hypo formula ensures a quick and efficient treatment, helping to maintain proper water balance and prevent any potential issues. The convenience factor of these pre-measured packets cannot be overstated. It saves time and eliminates the need for manual measuring, ensuring accurate dosing for consistent results. I appreciate the simplicity and ease of use that the HTH 52037 Shock Advanced provides. In conclusion, I highly recommend the HTH 52037 Swimming Pool Care Shock Advanced for anyone looking for an affordable and effective pool shock. Its cal hypo formula, combined with the convenience of pre-measured packets, makes it a reliable choice for maintaining a clean and balanced swimming pool. Furthermore, the significant cost savings compared to local pool stores add to its appeal. If you're seeking a high-quality pool shock that offers exceptional value, look no further than the HTH 52037 Shock Advanced. It definitely deserves a well-deserved five-star rating!

We've been using this brand of shock treatment for our above ground pool for several years now. It works great and is affordable for us. Have never had an issue with it except when we forget to put it in the pool lol! We only use this for our pool. We do not use any chlorine tablets or anything else. 1 bag once a week keeps our pool crystal clear, even in our hot humid and sometimes very Iowa climate.

Works great for my swim spa. I enjoy the smaller bags so I don’t have to haul a big container around. Last a long time as well. Works reliably and consistently. I like using shock because it keeps the CYA levels down since I keep my pool covered.

⭐️⭐️⭐️⭐️⭐️ Shockingly good… and yes, I mean that literally 😂💧 Picked this up to get my pool back in line (CYA was creeping up and things were getting a little “meh”), and this stuff delivered. I’ve got about a 16,500-gallon pool, and one treatment made a noticeable difference fast — like “walk outside and double-check the water” fast. It dissolves clean, circulates well, and actually does what it says. No guessing, no drama. Within a short time the water went from slightly dull to clear and inviting again. Perfect for those moments when your pool chemistry starts acting like it has its own personality. What I like most is how predictable it is. You add it, run the pump, and it just handles business. Great for routine shocking, after heavy use, or when things start drifting out of balance. It’s now part of my regular pool maintenance lineup. Bottom line: For a 16,500-gallon pool, this hits the sweet spot — fast, effective, and yes… shockingly good. 😄

I ordered this pool shock after reading the reviews. You are not kidding when you say this pool shock is the best! I use half the amount than other brands and it helps keep my pool crystal clear! I don't even have to use algecide along with the shock! Amazing product!