---
product_id: 515840682
title: "3\" Chlorine Tablets 25lbs."
brand: "hth"
price: "HK$1715"
currency: HKD
in_stock: false
reviews_count: 10
url: https://www.desertcart.hk/products/515840682-3-chlorine-tablets-25lbs
store_origin: HK
region: Hong Kong
---

# Slow dissolving for up to 1 week Sun-protected for longer chlorine life Sanitizes, clarifies & kills algae 3" Chlorine Tablets 25lbs.

**Brand:** hth
**Price:** HK$1715
**Availability:** ❌ Out of Stock

## Summary

> 💦 Dive into crystal-clear confidence with HTH’s all-in-one pool care!

## Quick Answers

- **What is this?** 3" Chlorine Tablets 25lbs. by hth
- **How much does it cost?** HK$1715 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/515840682-3-chlorine-tablets-25lbs)

## Best For

- hth enthusiasts

## Why This Product

- Trusted hth brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Pool Care:** Pair with HTH 6-Way Test Strips for precise water balance and optimal chlorine levels between 1-4 ppm.
- • **Triple-Action Power:** Sanitizer, clarifier, and algaecide in one easy tab keeps your pool pristine all season.
- • **Long-Lasting Formula:** Slow dissolving tablets provide up to 7 days of continuous protection—less hassle, more swim time.
- • **Sun-Protected Stability:** Advanced sun protection extends chlorine life, ensuring consistent water clarity even under harsh UV rays.
- • **Universal Compatibility:** Perfect for all pool types including vinyl-lined and saltwater systems—flexibility meets performance.

## Overview

HTH 3” Chlorine Tabs Advanced deliver a powerful triple-action formula that sanitizes, clarifies, and eliminates algae, ensuring crystal-clear pool water all season long. These slow-dissolving, sun-protected tablets last up to one week and are compatible with all pool types, including vinyl-lined and saltwater pools. Designed for convenient use in floaters, feeders, or skimmer baskets, they simplify pool maintenance while maximizing swimmer safety and water clarity.

## Description

The HTH 3” Chlorine Tabs Advanced is the ultimate convenience for pool care. This easy and convenient tab is a sanitizer, clarifier, and algaecide all in one, protecting your swimming pool and swimmers. The advanced formula sanitizes, clarifies, and kills algae for beautiful, clean, and clear water all season. These slow-dissolving, long-lasting tabs are sun-protected for longer chlorine life, dissolve slowly, and last up to one week. Compatible with all pool types, including vinyl-lined pools and saltwater systems, this product can be used in a floater, feeder, or skimmer basket. For best results, use HTH 6-Way Test Strips twice weekly to test and balance your swimming pool water and keep chlorine levels between 1 and 4 ppm. With HTH 3” Chlorine Tabs Advanced, you're all clear for endless summer fun!

Review: Works fantastic!! - These pucks are fantastic!! I don’t know what this brand does differently than other brands- but it works! We have had an above ground pool for 5 years now. The first couple years we used liquid chlorine and constantly had to battle with algae and burn off in the hotter months of summer. We switched to pucks during year 3, but the prior brand we were using had the same burn off issues. We swapped to this brand last year. Since using this brand our pool has been at consistent chlorine levels in the ideal range, without the burn off. Our pool has never been this clear!! We typically buy this size container, and break the pucks in half. We pop half a puck in the skimmer basket every day and a half, and the chlorine levels stay consistent. These don’t dissolve super quickly like other brands, but instead provide even chlorine coverage. I highly recommend this specific brand- we will never use anything else from here on out. For reference I have the Bestway platinum series 12’ x 20’. We also have a permanent skimmer basket (purchased separately) attached.
Review: Worked as expected - This is a big chlorine tablet. I probably should have read the description. The appearance is normal, looks like a chlorine tablet. Dissolvability was as expected and directions were easy to follow.

## Features

- BENEFIT: Sanitizer, clarifier, and algaecide to protect your swimming pool and swimmers with one easy and convenient tab
- CLEAR BLUE WATER: This advanced formula sanitizes, clarifies, and kills algae for beautiful, clean, and clear water all season
- SLOW DISSOLVING, LONG LASTING: Sun protected for longer chlorine life, HTH 3” Chlorine Tabs Advanced dissolve slowly and last up to one week
- COMPATIBLE WITH ALL POOLS: This product is great for all pool types including vinyl-lined pools and saltwater systems; Use in floater, feeder, or skimmer basket
- YOU’RE ALL CLEAR WITH HTH: For best results, use HTH 6-Way Test Strips twice weekly to test and balance your swimming pool water and keep chlorine levels between 1 and 4 ppm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09R82ZZ74 |
| Best Sellers Rank | #358 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #13 in Swimming Pool Chlorine |
| Brand | HTH |
| Brand Name | HTH |
| Customer Reviews | 4.6 out of 5 stars 3,132 Reviews |
| Global Trade Identification Number | 00073187420558 |
| Included Components | HTH - 42055 |
| Item Form | Tablet |
| Item Type Name | HTH - 42055 |
| Item Weight | 16 ounces |
| Manufacturer | HTH Store |
| Manufacturer Part Number | HTH - 42055 |
| Manufacturer Warranty Description | Warranty |
| Model Number | HTH - 42055 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Product Benefits | Controls Algae |
| UPC | 073187420558 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** HTH
- **Item Form:** Tablet
- **Item Weight:** 16 ounces
- **Product Benefits:** Controls Algae
- **UPC:** 073187420558

## Images

![3" Chlorine Tablets 25lbs. - Image 1](https://m.media-amazon.com/images/I/7108SAIXIuL.jpg)
![3" Chlorine Tablets 25lbs. - Image 2](https://m.media-amazon.com/images/I/71cNv7IJIXL.jpg)
![3" Chlorine Tablets 25lbs. - Image 3](https://m.media-amazon.com/images/I/61EOetLhFcL.jpg)
![3" Chlorine Tablets 25lbs. - Image 4](https://m.media-amazon.com/images/I/71qknfTpLcL.jpg)
![3" Chlorine Tablets 25lbs. - Image 5](https://m.media-amazon.com/images/I/61YIsEmJrfL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Does this have Stabilizer**
A: When Trichloro-S-Triazinetrione breaks down, chlorine and cyanuric acid are produced. Cyanuric acid is a stabilizer.

**Q: How many tablets are in a 5pound container**
A: 10 tablets. Basically $5.20 a tablet.

**Q: How many come in each container?**
A: Each tablet weighs approximately 8 oz.  So in a 5# container, you should have around 10 tablets.

**Q: Can I use this in my inflatable pool? Just wanting to make sure it won’t be too much since inflatables are much smaller compared to actual swim pools.**
A: Actually this product/tablet is too large for a small inflatable pool.  There will not be enough circulation in the pool to properly dissolve the product.  It will not be cost effective for you.  NOW, please know that we cannot recommend any product if your pool does not have a pump/filter.  Assuming that you do have that, you will be better using a granular chlorine such as the HTH Pool Care Shock Advanced in the 1.5 or 5 pound container.  This is because you will need a container that is reclosable and that you can measure the small amount (based on your volume of water) to your pool.  Do not buy the 1 pound container of shock because it's meant for single use in a large pool (10,000-12,000 gallons).  Again, the 1.5 shock in the reclosable container will work best.  Please consider calling our Consumer Engagement Team at 866-484-7665 to get the exact amount of dosage needed for your pool. We're available M-F, 9 AM - 7 PM EST.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works fantastic!!
*by L***M on July 6, 2026*

These pucks are fantastic!! I don’t know what this brand does differently than other brands- but it works! We have had an above ground pool for 5 years now. The first couple years we used liquid chlorine and constantly had to battle with algae and burn off in the hotter months of summer. We switched to pucks during year 3, but the prior brand we were using had the same burn off issues. We swapped to this brand last year. Since using this brand our pool has been at consistent chlorine levels in the ideal range, without the burn off. Our pool has never been this clear!! We typically buy this size container, and break the pucks in half. We pop half a puck in the skimmer basket every day and a half, and the chlorine levels stay consistent. These don’t dissolve super quickly like other brands, but instead provide even chlorine coverage. I highly recommend this specific brand- we will never use anything else from here on out. For reference I have the Bestway platinum series 12’ x 20’. We also have a permanent skimmer basket (purchased separately) attached.

### ⭐⭐⭐⭐⭐ Worked as expected
*by S***J on August 7, 2026*

This is a big chlorine tablet. I probably should have read the description. The appearance is normal, looks like a chlorine tablet. Dissolvability was as expected and directions were easy to follow.

### ⭐⭐⭐⭐⭐ Good quality
*by T***E on June 8, 2026*

These worked exactly as expected and made pool maintenance much easier. The tablets dissolved evenly, helped keep the water clear, and were simple to use. I’ve had good results so far and will definitely purchase them again when it’s time to restock.

## Frequently Bought Together

- HTH 42055 Swimming Pool Care 3" Chlorine Tabs Advanced, Swimming Pool Chlorinating Sanitizer, 25lb
- HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula (12 Pack)
- Clorox® Pool&Spa™ Swimming Pool Algaecide and Clarifier, Prevents and Treats Pool Algae, Clears Water, 128 Fl Oz (Pack of 1)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hk/products/515840682-3-chlorine-tablets-25lbs](https://www.desertcart.hk/products/515840682-3-chlorine-tablets-25lbs)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-08-23*