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💦 Shock your pool into brilliance—because your summer deserves crystal clarity!
HTH 52040B Swimming Pool Care Shock Ultra is a powerful Cal Hypo based pool sanitizer that rapidly boosts chlorine levels without adding cyanuric acid, preventing chlorine lock. Its visible blue action indicator confirms effectiveness, while its formula prevents bacteria, algae, stains, and scale buildup. Compatible with all pool types including vinyl and saltwater, it works best when combined with HTH 6-Way Test Strips for optimal water balance and clarity.
| ASIN | B09R81TQBS |
| Brand Name | HTH |
| Customer Reviews | 4.7 4.7 out of 5 stars (534) |
| Included Components | HTH 52040 Swimming Pool Care Shock Ultra, Swimming Pool Chemical, Cal Hypo Formula, 1lb (Pack of 6) |
| Item Form | Granular |
| Item Type Name | Swimming Pool Chemical Prevents Bacteria, Algae, Stain & Scale, Cal Hypo Formula |
| Item Weight | 6.3 Pounds |
| Manufacturer | Innovative Water Care |
| Product Benefits | Kills Bacteria |
| UPC | 073187520401 |
| Unit Count | 6 Count |
T**I
This is our first year having a pool. After trying several different shocks we settled on HTH Ultra Pool Shock.The product dissolves quickly and doesn’t leave behind any residue or cloudy water like some cheaper shock treatments I’ve tried in the past. Within a few hours of application, the water looks noticeably clearer, and it does a great job of eliminating that faint “chlorine smell” and any algae or bacteria growth. I also appreciate that the dosing instructions are straightforward, so there’s no guessing game when treating different pool sizes. One packet is usually enough to restore balance after a heavy swim day, rainstorm, or when the water just starts to look a little dull. It gives me peace of mind knowing that my family is swimming in clean, well-sanitized water. Overall, HTH Ultra Pool Shock is reliable, effective, and worth the price for the results you get. If you want a hassle-free way to maintain crystal-clear water, I highly recommend it.
K**N
Excellent for my salt water pool
J**V
Works well, in algae control, ease of use, and different ways you can apply it, just read and follow instructions.
A**H
Great shock. Thank you
K**1
Works soon much better than the cheap shock
Trustpilot
2 weeks ago
1 day ago