1 / 7In The Swim 1-Inch Bromine Plus Tablets, 8 lb
In The Swim Bromine Plus tablets are 1-inch bromine sanitizer tablets offered in an 8-pound size. The listing presents bromine as a chlorine alternative for pools, spas, and hot tubs, with particular emphasis on stability in warm water.
At a glance
- Positioned as a bromine sanitizer for pools, spas, and hot tubs.
- The listing claims bromine is more stable than chlorine at higher temperatures, a potential fit for hot tubs.
- Described as low odor and as a chlorine alternative.
- Listing says bromine can remain effective at higher pH levels and can be reactivated with an oxidizer.
Often bought together

U.S. Pool Supply Floating Spa, Hot Tub & Small Pool Chlorine and Bromine | Chemical Dispenser - Holds 1" Tablets, 13 Flow Level Control Setting
$15.99

EASYTEST 7-Way Pool Test Strips, 150 Strips Water Test for Hot tub and Spa | Water Chemical Testing kit for Bromine, Total Alkalinity, pH, Free Chlorine, Total Hardness, Cyanuric Acid, Total Chlorine
$11.99
Pros and cons
Pros
- The 1-inch tablet format and 8-pound size are specified, making the product choice clear for buyers seeking that format and quantity.
- The listing's warm-water stability claim is relevant to hot-tub use.
- Customer feedback reports ease of use and low odor.
Cons
- Customer feedback is mixed on dissolving speed and water clarity, so results may not match every buyer's expectations.
Technical specifications
7 specifications| Brand | In The Swim |
|---|---|
| Model | U138008032AE |
| Form | Tablet |
|---|---|
| Listed weight | 8 pounds |
| Listed benefits | Kills Bacteria, Maintains Clean Sanitized Water |
| Active ingredient claim | 98% active ingredient |
|---|---|
| Tablet size | 1-inch |
What to know before buying
- Follow the product directions and regularly test pool or spa water to manage its chemistry. The claims about sanitizing strength and performance are listing statements, not independently verified measurements.
Who is it for?
A good fit for
- Hot-tub owners looking for bromine tablets and an alternative to chlorine-based sanitizing.
- Pool and spa owners who want the listed 1-inch tablet format in an 8-pound quantity.
Less suited to
- Buyers who need a guaranteed dissolving time or uniform water-clarity results, since customer feedback on both is mixed.
- Buyers seeking a different tablet size or package quantity.

Customer reviews on Amazon
- 5 stars
84% 84% - 4 stars
9% 9% - 3 stars
4% 4% - 2 stars
0% 0% - 1 star
3% 3%
Customer feedback highlights reported ease of use, low odor, suitability for hot tubs, and perceived effectiveness. Some customers say tablets last up to three days in a 400-gallon hot tub, while feedback on dissolving speed and water clarity is mixed. The reports are relevant to the product's listed tablet format and hot-tub use, but they do not establish a universal treatment interval or result.
Positive themes
- Customers report that the tablets are easy to use and have little odor.
- Customer feedback describes the tablet size as suitable for hot-tub use and reports perceived sanitizing effectiveness.
Mixed feedback
- Reports differ on dissolving speed, with some customers describing slow dissolution.
- Water clarity feedback is mixed, with some reporting clear water and others less consistent results.
Frequently asked questions
What size and quantity are these tablets?
The listing identifies them as 1-inch tablets and gives the package weight as 8 pounds.
Are these intended for hot tubs?
The listing positions them for spas and hot tubs as well as swimming pools, and claims bromine is more stable than chlorine at higher temperatures.
How do customers describe dissolving and water clarity?
Customer feedback is mixed. Some report clear water, while others say the tablets dissolve slowly.
Does the listing specify an active ingredient percentage?
Yes. It claims 98% active ingredient. This is a listing claim, not an independently verified measurement.

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Offer details
- Regularly test pool or spa water and follow the product directions when managing water chemistry.