SpaGuard
SpaGuard pH Increaser (18 fl oz)
$9.34
Raises the pH
Protects equipment from corrosion due to low pH
Balances water for bather comfort
Sundance Spas
Sundance® 75 Sq Ft MicroClean® Filter Cartridge (2005–201...
$80.17
Genuine Sundance® 75 sq ft MicroClean® filter cartridge designed for select 2005–2012 Sundance Spa models.
Provides high-efficiency filtration to keep spa water clean and clear of fine particles and contaminants.
Pleated polyester media construction ensures durability and long-lasting performance.
Fits Sundance® spa models requiring a 75 sq ft MicroClean® filter cartridge (verify with your spa manual).
OEM replacement part guarantees a perfect fit and maintains manufacturer-recommended water quality standards.
Easy to install and replace, simplifying regular spa maintenance routines.
Helps extend the life of spa plumbing and pumps by reducing buildup and debris circulation.
Hot Tub Things
Hot Tub Things® Inner Filter – Sundance® 880/850 Series (...
$35.95
Provides a direct replacement for the OEM Sundance® MicroClean® Ultra inner filter—densely spun-bound polyester microfiber media captures ultra-fine particles and preserves spa clarity.
Compatible with Sundance® 880 Series (2009–2023) and 850 Series (2005–2023), including Altamar, Capri, Cameo, Majesta, Marin, Maxxus, Optima, Aspen, Claremont, and Lisbon models.
Fully fits original part #6473‑164S—aka AK‑6473164 or SD‑01293—in Dual‑Stage MicroClean® Ultra setups; outer filter sold separately.
Dimensions are approximately 18.74″ length × 5.63″ diameter, with open 2.75″ top and bottom holes for precise installation.
Non-washable; replace every 3–6 months based on usage to maintain optimal water clarity and avoid strain on spa components.
Quick, tool-free installation—remove existing inner filter, insert fresh one, and replace the compatible outer filter for full performance restoration.
Hot Tub Things
Hot Tub Things® Stain & Scale Control – 32 oz Spa Mineral...
$27.50
Prevents mineral buildup and waterline scale caused by calcium, magnesium, and other hard water deposits.
Protects spa surfaces, plumbing, and heating elements from corrosion and costly damage.
Effective against metal stains caused by dissolved iron, copper, and manganese.
Ideal for use at startup (fresh fill) and as part of a weekly spa care routine.
Compatible with all sanitizer types including chlorine, bromine, saltwater, and biguanide systems.
Helps maintain clear, sparkling water by binding minerals before they can precipitate.
Easy-pour 32 oz bottle with accurate measurement markings for hassle-free dosing.
Made in the USA and trusted by spa professionals for reliable performance.
Leisure Time
Leisure Time Spa Down (2 lb)
$5.99
$12.99
A high pH (above 7.8) can cause scaling and/or cloudy or colored spa water. Leisure Time® Spa Down is a granular product that lowers the pH and total alkalinity levels in your spa water and increases the effectiveness of your sanitizer.
Fast-dissolving granular formula that works quickly
Balances pH and alkalinity levels to allow sanitizers to clean more effectively
Compatible with all sanitizers, including chlorine, bromine, ozone and biguanide systems and easy to use
Leisure Time® Spa Down lowers pH and total alkalinity in your spa and hot tub water
For best results, use Leisure Time® Test Strips twice weekly to balance pH levels and prevent corrosion and scale
The simple routine from Leisure Time® helps you reduce water care time for a more relaxing spa experience
Hot Tub Things
Hot Tub Things® Bromine Tablets for Spas – 1.5 lb, Low-Od...
$30.94
Contains 98% bromochloro-5-5 active ingredient with minimal binding agents
Low-odor alternative to chlorine, preserves swimwear and spa surfaces
Ideal for use in floating dispensers or inline brominators
Each tablet is approximately 1″ in diameter for controlled dissolution
Meets strict quality standards—safety tested and performance guaranteed
Bullfrog Spas and FROG
FROG® @ease XL Sanitizing System for Bullfrog® Spas – Sim...
$74.95
Designed for Bullfrog® Spas with the Simplicity™ control system (2019 and newer) that require XL capacity sanitation
Includes one pre-filled SmartChlor® XL cartridge and one mineral cartridge for long-lasting water care
XL SmartChlor® cartridge lasts up to 6 weeks—50% longer than standard cartridges
Maintains crystal-clear water with self-regulating SmartChlor® Technology and no daily adjustments
Works with the in-line cartridge holder built into the spa—no floating devices needed
Provides complete 2-in-1 sanitation while reducing chlorine use by up to 75%
Leaves water softer, with less odor and minimal skin or eye irritation
Quick snap-in design makes cartridge replacement simple and mess-free
Bullfrog Spas
Bullfrog® A‑Series Regular Headrest, Graphite Foam (2020–...
$81.29
Update your Bullfrog® A‑Series JetPak modules (2020 onward) with this OEM regular headrest (#60‑01381) in sleek graphite. Featuring firm foam and spa-grade vinyl, it offers dependable neck support and fits seamlessly into 2020–present JetPaks. The two-pin snap-in attachment ensures a secure fit without tools. Built for durability, it resists spa chemicals and UV rays while maintaining spa-grade aesthetics and comfort.
Tailored for regular JetPak modules in A‑Series spas (2020+)
High-density foam core with spa-grade vinyl cover
Two-pin snap-in design ensures stable placement
Materials resist chemicals, heat, and UV exposure
OEM-grade fit restores both function and look
Bullfrog Spas
Bullfrog® A‑Series Regular Headrest, Black Foam (2016–201...
$59.13
Restore the comfort of your A‑Series spa's regular JetPaks (2016–2019) with this genuine Bullfrog® OEM headrest (#60‑00071). Made from high-density foam and covered in durable black vinyl, it delivers consistent neck support without sagging or fading. Its two-pin snap-in design ensures easy, precise, and tool-free installation. Built to endure spa chemicals and UV exposure, it offers reliable performance and restores a clean, factory finish to your spa.
Designed exclusively for regular JetPaks on A‑Series spas (2016–2019)
High-density foam cushion wrapped in spa-grade black vinyl
Secure two-pin snap-in fitting prevents shifting during use
Engineered for resistance to spa chemicals, heat, and UV rays
OEM quality fit ensures restored comfort and aesthetics
Bullfrog Spas
Bullfrog® Filter Core Cage & Cap Assembly (2013–Present) ...
$38.14
OEM Bullfrog® filter core cage and cap assembly designed to retrofit 2013–2017 A, R, X, and STIL series spas for use with coreless filter cartridges (#10‑00416 or #10‑00810)
Also serves as a replacement cage for 2018 and newer Bullfrog spas that already utilize coreless filters
Includes both the durable cage and matching cap for a complete installation set
Simplifies filter changes—coreless design eliminates traditional filter cores, improving maintenance and flow
Constructed of robust plastic, built to withstand spa water and frequent cartridge swaps
Tool-free installation: simply remove old assembly, insert new cage, snap on cap, and add coreless cartridge
Supports clearer water, reduced clogging, and streamlined spa care
Measures approximately 6.25" × 4.5" × 4.5" and weighs around 0.5 lb
Jacuzzi Hot Tubs
Jacuzzi® PROCLARITY® Depth Load Filter Cartridge – Ultra‑...
$27.05
OEM ProClarity™ depth-load filter cartridge (part #6473‑161J), engineered with ultra-dense microfiber media to capture microscopic debris and polish spa water clarity
Designed for use in Jacuzzi® J‑400 and J‑500 Series tubs (2012+), as well as selectable J‑300 Collection models upgraded to ProClarity™ systems
Absorbs particles up to ten times finer than standard pleated filters—enhancing filtration performance in multi-stage systems
Disposable: do not rinse or reuse; replace every 3–4 months (or roughly 90 days) for optimal performance
Must be installed with solid side up, above the plumbing grate, paired with a pleated pre-filter
Hot Tub Things
Hot Tub Things® Disposable MicroClean® Filter – Sundance®...
$18.50
Direct replacement for the Sundance® Disposable MicroClean® upper cartridge (OEM 6540-502S), crafted with microfiber media to absorb oils, lotions, and ultra-fine debris that bypass pleated filters.
Compatible with Sundance® Spas from 2002–2024, including models like Tango, Caprio, Metro, Bahia, Dover, Montclair, Chelsee, Victoria, Constance, Bristol, and more.
Compact “top-hat” design (7.64″ × 7.68″ × 5.08″) fits securely inside the outer filter (6540-501S) in dual-stage MicroClean® systems.
Non-washable; replace every 3–4 months or after draining to maintain water clarity and chemical efficiency.
Fully compatible with all sanitizer types—chlorine, bromine, UV, and mineral.
Lightweight (~0.71 lb) and budget-friendly while providing OEM-level filtration performance.
Sundance Spas
Sundance® 880 Series MicroClean® Ultra Outer Filter – (20...
$102.11
Genuine Sundance® MicroClean® Ultra outer filter for 880 Series spas from 2009 to present
Designed to work in tandem with the MicroClean® Ultra inner filter (sold separately) as part of a 2-stage filtration system
High-capacity pleated design captures oils, debris, and fine particulates for crystal-clear spa water
Engineered for optimal water flow and extended filter life with less frequent cleanings
Constructed with durable, chemical-resistant media and reinforced end caps
OEM direct-fit replacement—no adapters or modifications needed
Compatible with 880 Series models including Optima, Cameo, Altamar, Marin, and Maxxus (2009+)
For best results, replace both inner and outer filters every 4–6 months depending on usage
Jacuzzi Hot Tubs
Jacuzzi® ProClear Mineral Spa Sanitizer – Controlled Rele...
$55.19
Official Jacuzzi® ProClear™ Mineral Spa Sanitizer cartridge (part #2890‑185), designed to drop into your filter cap for effortless installation
Uses Controlled Release Technology (CRT) to release trace amounts of silver and other minerals during shock treatments, naturally sanitizing water and reducing chlorine demand by up to 50%
Works in tandem with spa oxidizers such as MPS, Trio #2 shock, or chlorine to enhance clarity and soften water feel
Compatible with Jacuzzi® J‑300, J‑400, J‑500, and J‑LX hot tub models that feature removable filter cap mounts for mineral stick insertion
Lasts approximately 4 months under typical weekly use—replace at that interval for consistent performance
Helps maintain stable pH, prevents staining, and minimizes odor while providing a more gentle spa experience
SpaGuard
SpaGuard Total Alkalinity Increaser (2 lb)
$12.99
Eliminates “pH bounce” by balancing total alkalinity
Helps to prevent equipment and surface corrosion and damage due to low pH
1 tbsp. per 100 gallons raises total alkalinity 25 ppm
Bullfrog Spas
Bullfrog® X‑Series Headrest, Gray Foam (2015–2022) – part...
$53.73
Renew your Bullfrog® X‑Series spa seating comfort with this OEM headrest (#60‑1390), compatible with Gray JetPak modules from 2015 to 2022. Engineered with weather-resistant high-density foam and gray spa-grade vinyl, it offers plush neck support and durability. The two-pin snap-in mounting delivers a secure, tool-free fit. Ideal for replacing worn originals, this headrest restores both comfort and X‑Series aesthetics.
Suited for X‑Series JetPak seating (2015–2022)
High-density foam core and gray vinyl cover
Snap-in installation with two-pin secure fit
Built to resist spa chemicals, heat, and UV exposure
OEM match ensures proper fit and comfort restoration
Hot Tub Things
Hot Tub Things® Flat Filters 4‑Pack – Fits Simplicity® by...
$69.95
High-quality Hot Tub Things® flat filter 4-pack, compatible with Bullfrog® Simplicity® Series spas
Direct replacement for OEM filter part #10‑00814 used in 2018 and newer Simplicity® models
Coreless design improves water flow and efficiency while simplifying filter changes
Engineered from durable pleated media that captures fine particles and debris
Designed for quick installation—no adapters or tools required
Replaces factory-installed filters for reliable water clarity and hassle-free maintenance
Includes 4 flat cartridge filters—a convenient bulk pack for seasonal replacement
Not compatible with Bullfrog STIL, M, A, or X Series spas
Bullfrog Spas and FROG
FROG® @ease XL SmartChlor Cartridge 3‑Pack for Bullfrog® ...
$84.95
Includes three extra-long SmartChlor® cartridges for Bullfrog® Spas with Simplicity™ control systems (2019+)
Designed for in-line use with the FROG® @ease XL Sanitizing System—no floating system required
XL cartridges provide extended sanitizing power, lasting up to 6 weeks each
SmartChlor® Technology self-regulates to maintain consistent chlorine levels
Reduces typical chlorine use by up to 75%, creating cleaner, softer water with less odor
Works alongside the FROG® mineral cartridge to deliver full 2-in-1 water care
Simple snap-in design for fast, no-mess replacements
Ideal for spa owners who want longer intervals between cartridge changes
Hot Tub Things
Hot Tub Things® Outer Filter – Sundance® 880/850 Series (...
$60.95
Premium washable outer filter cartridge crafted for Sundance® MicroClean® Ultra systems, matching OEM part #6473‑165S in design and performance.
Compatible with Sundance® 850 Series (2005–2023) and 880 Series (2009–2023), including Altamar, Cameo, Capri, Majesta, Marin, Maxxus, Optima, Claremont, and Kingston models.
Made from durable spunbonded polyester media that resists fraying and shedding under spa heat and chemical exposure.
Core of a dual-stage filtration system—captures larger debris and protects the inner filter—extending its lifespan and maintaining water clarity.
Fully reusable; just rinse monthly to restore performance and reduce filter replacement costs.
OEM-matching dimensions: approximately 19.8″ length × 8.42″ diameter, with a 2.5″ hole, and offers about 130 sq. ft. of pleated surface area.
FROG
FROG Test Strips for Pools and Hot Tubs - Test Strip with...
$15.98
Compatible with FROG Sanitizing Systems: Don't be confused by standard test strips, only FROG Test Strips help you monitor and maintain the low free chlorine or bromine levels needed when using FROG Fresh Mineral Water; works for both swimming pools and hot tubs
Support Water Balance: FROG Test Strips are specially designed to test for free chlorine or bromine levels present in FROG Fresh Mineral Water; accurately monitor and balance your water chemistry for optimal sanitization and enjoyment
Comprehensive Testing Strips: Test strips measure free chlorine or bromine levels, total alkalinity, pH and hardness to help keep your pool and hot tub water in perfect condition
Quick Water Test Results: Each bottle contains 50 test strips; dip FROG test strips for two seconds and view instant readings right on the bottle, ensuring easy pool and hot tub maintenance
Water Care Expertise: FROG has more than 25 years of experience making water care easier & keeping pool, hot tub and swim spa water sanitized; FROG's patented Mineral Technology and prefilled cartridges create cleaner, clearer, softer water
Bullfrog Spas
Bullfrog® R‑Series Regular Headrest, Dark Gray Foam (2013...
$55.89
Refresh your R‑Series spa with this OEM regular headrest (#60‑00947), compatible with JetPak modules from 2013 to 2022. It features dense foam wrapped in dark gray vinyl, offering consistent neck support and resistance to spa wear. Crafted with a two-pin snap attachment, it installs securely without tools. Durable for spa environments, it resists chemicals and UV light, restoring both comfort and style to your spa's JetPak seating.
Compatible with most R‑Series JetPaks (2013–2022)
High-density foam core with dark gray spa-grade vinyl material
Two-pin snap-in attachment for tool-free installation
Handles spa chemicals, sunlight, and heat exposure
OEM-grade restoration for spa comfort and appearance
Jacuzzi Hot Tubs
Jacuzzi® ProClear® 60 Sq Ft Filter Cartridge – 15.45″ Hyd...
$75.35
Genuine Jacuzzi® ProClear® 60 sq ft hydro filter (part #6000‑383AJ), built for J‑300™, J‑400™, J‑500™, and J‑LX™ Collection spas
High-capacity woven Reemay® media provides deep filtration and extended flow life
Twist-off cap accommodates ProClear™ mineral sanitizer (silver cartridge) or chemical dispensers without removal
Measures approximately 15.45″ tall by 6.697″ diameter, with 2.375″ bottom threaded port for OEM fit
Compatible with all J‑300™ models (2002+); select J‑400 (2013+), J‑500 (2015+), and J‑LX/LXL (2011‑2019 & 2023+) spa models
Hot Tub Things
Hot Tub Things® Chlorine Starter Kit – All-In-One Launch ...
$79.95
Designed as a full water-care startup bundle for new hot tub fills, this kit includes everything you need for the first two months of use.
Contains 1 lb of high-quality chlorine granules as the primary sanitizer, along with 1.25 lb each of pH & alkalinity up and down granules to maintain optimal water chemistry.
Includes 1 lb of oxidizing spa shock (potassium monopersulfate) to reset sanitizer and eliminate organic contaminants and odor.
Features 1 pint of spa clarifier to help trap microscopic particles in the filter and maintain water clarity.
Comes with 1 pint of metal remover (“Metal Out”) to sequester iron, copper, and other metals commonly found in refill water.
Includes a 50‑strip test kit and a waterproof owner's guide to help you learn proper testing and dosing routines quickly.
Packaged in a sturdy box from an American-made chemical line, the kit delivers trusted, professional-grade performance.
Ideal for spa owners who prefer straightforward, all‑in‑one solutions to set up and maintain clean spa water with confidence.
A popular pick with 244 five-star reviews, praised for its convenience and reliable startup results.
SpaGuard
SpaGuard Calcium Increaser (12 fl oz)
$9.14
SpaGuard's Calcium Hardness Increaser enables spa owners to increase their calcium hardness with this easy to use granular formula, which will boost your calcium hardness to above the danger zone, where low levels cause extensive corrosion of plumbing, jets, fixtures, and tub surfaces. Calcium Hardness Increaser helps raise the calcium level steadily so you don't get too much calcium and start developing scale build-up and cloudy water.