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Want to keep your stuff looking newer, longer? When UV protection and surface finish matter to you, 303 Products has the solution.
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SpaGuard Calcium Increaser (12 oz)
- Prevents corrosion of equipment
- Prevents degradation of spa surfaces
- 1 tbsp. per 100 gallons increases calcium hardness ~25 ppm
$7.99 -
SpaGuard pH Increaser (18 oz)
- Raises the pH
- Protects equipment from corrosion due to low pH
- Balances water for bather comfort
$8.99 -
SpaGuard pH Decreaser (22 oz)
- Lowers the pH
- Protects spa and equipment due to improper pH
- Prevents cloudy water due to high pH
- Balances water for bather comfort
$9.99 -
Hot Tub Things pH and Alkalinity Up (1 lb)
- PROPER BALANCE: Keep hot tub water in check – this product increases pH and Alkalinity to obtain the proper balance!
- PUREST CHEMICALS AVAILABLE: Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
- #1 TRUSTED BRAND: Hot tub things is America’s #1 Trusted Brand of Hot Tub Chemicals. Try us!
- MULTIPLE BENEFITS: The product raises low pH to prevent corrosion, optimize sanitizer effectiveness, reduce eye irritation.
- GUARANTEED PERFORMANCE: Safety Tested to Assure Quality, Guaranteed Performance
- MAINTAIN OR INCREASE YOUR PH: Add the appropriate amount of product to maintain the pH level or raise the level up
$12.50 -
SpaGuard Water Clarifier (16 oz)
- Helps clear cloudy water
- Does not affect pH
- Combines small particles into larger ones for easier filtration
$12.99 -
SpaGuard Total Alkalinity Increaser (2 lb)
- 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
$12.99 -
SpaGuard® Rapid-Dissolve pH Decreaser Tabs (1.25 lb)
- Quickly decrease pH level of spa water
- Provide soaker comfort and protect spa and swim spa equipment
- 2 tabs per 250 gallons – 1000 liters as needed
- Lowers pH 0.1 – 0.2 units
$12.99 -
Hot Tub Things Spa Clarifier (16 oz)
- NO MORE CLOUDY WATER: Keep hot tub water sparkling year round! A dose of spa clarifier will quickly eliminate cloudy water.
- TOP BRAND: Hot tubs things is America’s #1 Trusted Brand of Hot Tub Chemicals
- GUARANTEED PERFORMANCE: Safety Tested to Assure Quality, Guaranteed Performance
- PUREST CHEMICALS: Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
$13.00 -
SpaGuard Anti Foam (16 oz)
- 16 oz bottle of SpaGuard Anti Foam
- Chlorine-free, compatible with chlorine, bromine, and minerals
- Fast-acting water treatment reduces foam instantly
- Does not interrupt your bathing session
$13.99 -
Hot Tub Things Pillow & Cover Cleaner 32 oz
- The quick and easy way to clean hot tub pillows
- America’s #1 Trusted Brand of Hot Tub Chemicals
- Safety Tested to Assure Quality, Guaranteed Performance
- Formulated Exclusively for Hot Tubs not to cause excess foam the way soap can
- Alcohol-free formula will not cause pillows to dry or crack
$15.95 -
SpaGuard® Rapid-Dissolve Alkalinity Increaser Tabs (1.25 lb)
- Control pH bounce by quickly raising total alkalinity
- Helps protect equipment from corrosion
- 2 tabs per 250 gallons – 1000 liters as needed
- Raises total alkalinity by 30 ppm
$15.99 -
Hot Tub Things Chlorinating Granules (1 lb)
- BACTERIA AT BAY: Say goodbye to bacteria and say hello to clean water!
- TOP BRAND: Hot tub things is America’s #1 Trusted Brand of Hot Tub Chemicals.
- GUARANTEED PERFORMANCE: Safety Tested to Assure Quality, Guaranteed Performance.
- PUREST CHEMICALS AVAILABLE: Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available.
$16.00 -
303® Aerospace Protectant (16 oz)
- For vinyl, rubber, and plastic
- Protects and preserves outdoor furnishings from moisture and UV damage
- Prevents fading and cracking
- Repels dust and lint for easier cleaning
- invented and made in USA
$16.95 -
Hot Tub Things Filter (compatible with Sundance® 6540-502)
Please Note: This is the disposable, spun-polymer filter. It is “doughnut” shaped. 5″ tall, 7.75″ in diameter. Most Sundance Spas hot tubs that use this filter will also need the pleated filter cartridge HTT-6540-501 or comparable Sundance Filter.
- SINGLE PACK | Save money and resources. lasts up to 6 months
- FULLY COMPATIBLE | The replacement filter fits perfectly in Sundance Select series hot tubs, so you can purify your residential hot tub while saving money over name-brand Sundance filters
- SUPERIOR FILTRATION | The blown polymer strands in this filter nest tightly to screen out even microscopic-sized particles
- SUITABLE FOR ALL CHEMISTRIES | The filter is compatible with bromine, chlorine, UV-ray, and the SunPurity mineral sanitizer (sold separately)
$18.50 -
303® Multi-Surface Cleaner (16 oz)
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303 Multi-Surface Cleaner is safe to use on a variety of surfaces, such as:
- Fabrics: 303 Multi-Surface Cleaner works on all water-safe fabrics and designed to clean even the most delicate fabrics
- Stainless Steel and Chrome: After a family outing, clean up food and drink marks from your boat’s interior and galley.
- Vinyl, Rubber and Plastics: Use on your boat or spa cover to remove dirt or water marks, perfect before sealing with 303 Aerospace Protectant.
- Metal, Aluminum, and Wicker: Take extra care of your furniture. 303 Multi-Surface Cleaner unique formula will rinse residue free.
$18.95 -
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Hot Tub Things Oxidizing Spa Shock (1 lb)
- BY ORGANIC BUILD UP!: Use shock weekly to control and prevent organic buildup that causes cloudy water!
- TOP BRAND: Hot tub things is America’s #1 Trusted Brand of Hot Tub Chemicals
- GUARANTEED PERFORMANCE: Safety Tested to Assure Quality, Guaranteed Performance
- PUREST CHEMICALS!: Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
$19.00 -
Hot Tub Things Cartridge Cleaner (32 oz)
- Use Cartridge Cleaner for a deep clean that keeps your filter operating in peak condition; specifically for removal of oils, grease and soaps!
- America’s #1 Trusted Brand of Hot Tub Chemicals
- Safety Tested to Assure Quality, Guaranteed Performance
- Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
- Compare to Leisure Time Filter Clean
$19.50 -
Hot Tub Things pH and Alkalinity Up (2 lb)
- PROPER BALANCE: Keep hot tub water in check – this product increases pH and Alkalinity to obtain the proper balance!
- PUREST CHEMICALS AVAILABLE: Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
- #1 TRUSTED BRAND: Hot tub things is America’s #1 Trusted Brand of Hot Tub Chemicals. Try us!
- MULTIPLE BENEFITS: The product raises low pH to prevent corrosion, optimize sanitizer effectiveness, reduce eye irritation.
- GUARANTEED PERFORMANCE: Safety Tested to Assure Quality, Guaranteed Performance
- MAINTAIN OR INCREASE YOUR PH: Add the appropriate amount of product to maintain the pH level or raise the level up
$21.50 -
Hot Tub Things Metal Out (16 oz)
- Prevent scale, staining, and calcium build-up on surfaces.
- America’s #1 Trusted Brand of Hot Tub Chemicals
- Safety Tested to Assure Quality, Guaranteed Performance
- Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
- Compare to Leisure Time Metal Gone
$22.50 -
Hot Tub Things Spa Defoamer (16 oz)
- Instantly zap foam with a dose of Spa Defoamer – breaks up existing foam in spas, hot tubs, and whirlpools!
- America’s #1 Trusted Brand of Hot Tub Chemicals
- Safety Tested to Assure Quality, Guaranteed Performance
- Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
- Compare to Leisure Time Foam Down
$22.50 -
Hot Tub Things Jet Line Cleaner 16 oz
- Jet Line Cleaner clears spa and jetted bath tub plumbing of organics, oils, dirt, and minerals!
- America’s #1 Trusted Brand of Hot Tub Chemicals
- Safety Tested to Assure Quality, Guaranteed Performance
- Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
- Compare to Leisure Time Jet Line
$22.50 -
303® Marine Fabric Guard (16 oz)
- Restores lost water and stain repellency to factory new levels
- Provides strong resistance against soiling
- Protects against water-based and oil-based stains
- Does not alter fabric color, feel, flammability or breathability
- Safe for the synthetic or natural fibers
$22.95 -
SpaGuard® Rapid-Dissolve Shock Oxidizing Tabs (1.25 lb)
- Non-chlorine shock-oxidizer
- Quickly oxidizes non-living waste and contaminants**
- Single-dose, 1” tab per 300 gallons – 1200 liters weekly
- Bottle treats average-sized spas for 12+ weeks
$23.99 -
Hot Tub Things pH and Alkalinity Down 1.25 lb
- Keep hot tub water in check. This product lowers pH and Alkalinity to obtain the proper balance!
- America’s #1 Trusted Brand of Hot Tub Chemicals
- Safety Tested to Assure Quality, Guaranteed Performance
- Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
- Compare to Leisure Time Spa Down
$24.50 -
Hot Tub Things SPAPURITY™ Mineral Cartridge
Clean your hot tub water with the power of silver ions.
- Boosts your water quality effectively, constantly, and without chemical odors
- Compatible with all major hot tub brands
- Handles up to 500 gallon spas
- Works alongside chlorine, bromine, ozone, and UV sanitizers
$24.95 -
SilkBalance Clean Start – Plumbing Line Cleaner
- Fast, powerful, safe, and low foam results in 30 minutes or less
- Purges the plumbing system and hot tub accessories
- Eliminates slime and sludge in jets and plumbing lines
- Proprietary formula detoxes your spa but safe to use immediately after
- 1 botte / 1 dose
$24.99 -
Hot Tub Things Calcium Increaser 32 oz
- Add a little calcium increaser regularly to protect your hot tub from corrosion caused by low calcium
- America’s #1 Trusted Brand of Hot Tub Chemicals
- Safety Tested to Assure Quality, Guaranteed Performance
- Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
- Compare to Leisure Time Calcium Booster
$25.50 -
Hot Tub Things Spa Clarifier (32 oz)
- NO MORE CLOUDY WATER: Keep hot tub water sparkling year round! A dose of spa clarifier will quickly eliminate cloudy water.
- TOP BRAND: Hot tubs things is America’s #1 Trusted Brand of Hot Tub Chemicals
- GUARANTEED PERFORMANCE: Safety Tested to Assure Quality, Guaranteed Performance
- PUREST CHEMICALS: Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
$25.50 -
SpaGuard Spa Sentry® (32 oz)
- Controls pH in one easy step
- Establishes proper PH and prevents pH drift
- Softens hot tub water by removing calcium
- Enhances water clarity
$25.99 -
SpaGuard Natural Spa Enzyme (32 oz)
• Enzyme formulation breaks down oils naturally
• pH~3.0-4.5
• Reduces scum line build-up and odors
• Controls cloudy water
• Improves Filtration
• Reduces maintenance time
• Keeps spa clean longer$26.99 -
Hot Tub Things Stain and Scale Control 32 oz
- This necessary fresh fill product prevents the collection of harmful minerals on the hot tub shell and parts!
- America’s #1 Trusted Brand of Hot Tub Chemicals
- Safety Tested to Assure Quality, Guaranteed Performance
- Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
- Compare to Leisure Time Control
$27.50 -
Hot Tub Things Instant Cartridge Cleaner (32 oz)
- The quick and easy way to clean a hot tub filter. Spray On, Rinse Off, No Soaking Required!
- America’s #1 Trusted Brand of Hot Tub Chemicals
- Safety Tested to Assure Quality, Guaranteed Performance
- Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
- Compare to Leisure Time Instant Cartridge Clean
$27.50 -
303® Aerospace Protectant (32 oz)
- For vinyl, rubber, and plastic
- Protects and preserves outdoor furnishings from moisture and UV damage
- Prevents fading and cracking
- Repels dust and lint for easier cleaning
- invented and made in USA
$27.95 -
SpaGuard Stain & Scale Control (32 oz)
- SpaGuard Spa Stain & Scale Control – 1 Quart
- Prevents scale formation and cloudy water due to high calcium levels
- Removes some scale buildup on spa surface
- Removes relatively fresh metal stains from spa surfaces
- Simply add this powerful liquid formula weekly to safeguard your spa or hot tub from these threats. Color of the liquid is natural brown
$27.99 -
SpaGuard Brominating Concentrate (2 lb)
- Add granular pellets into spa while pump is running.
- pH Neutral so it will not change the pH levels of your spa.
- eliminates odors and other compounds.
$27.99 -
SpaGuard Spa Shock-Oxidizer (Buffered Non-Chlorine) (35 oz)
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- 35 oz bottle SpaGuard Spa Shock-Oxidizer
- Buffered, non-chlorine formula does not interfere with your balance water
- Compatible with chlorine, bromine, and minerals
- Use along with a chemical sanitizer to keep your hot tub clean and germ-free
$28.99 -
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SpaGuard® Rapid-Dissolve Stain & Scale Tabs (1.25 lb)
- Controls metal-based staining & scaling
- Protects spa and swim spa equipment and surfaces
- Single-dose, 1” tab per 300 gallons – 1200 liters weekly
- Bottle treats average-sized spa for 12+ weeks
$28.99 -
SpaGuard Chlorinating Concentrate (2 lb)
- Fast-acting, quick-dissolving
- Easy to use, no pre-dissolving needed
- Acts as a sanitizer and an oxidizer; no need for two products
- Apply directly to water while the pump is running
$29.99 -
Hot Tub Things Chlorinating Granules (2 lb)
- BACTERIA AT BAY: Say goodbye to bacteria and say hello to clean water!
- TOP BRAND: Hot tub things is America’s #1 Trusted Brand of Hot Tub Chemicals.
- GUARANTEED PERFORMANCE: Safety Tested to Assure Quality, Guaranteed Performance.
- PUREST CHEMICALS AVAILABLE: Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available.
$30.00 -
SpaGuard Brominating Tablets (1.5 lb)
- 24 oz bottle of brom tabs
- tablets measure 1.25″ diameter and fit most dispensers
- low-odor, low-maintenance formula
- requires shock and/or sodium bromide when filling tub with fresh water
$33.99 -
SpaGuard® Rapid-Dissolve Chlorinating Tabs (1.25 lb)
- Quick-dissolving sanitizer and oxidizer
- Single-dose, 1” tab per 300/600 gallons – 1200-2700 liters weekly
- Administers 3-5ppm of free chlorine
$34.99 -
Hot Tub Things Bromine Tablets 1.5 lb
- EFFECTIVE SANITIZING: Hot Tub Things Bromine Tablets kill bacteria, viruses, mold, and algae.
- LOW ODOR: Bromine gives off far less odor than comparable chlorine sanitizer. Your colorful swimsuits will last longer with bromine, too.
- PUREST CHEMICALS: Our tablets are 98% bromochloro-5-5 with just 2% binding agents to hold the tablet together.
- CONSTANT, STEADY SANITIZING: Bromine dissolves slowly, so you’ll add chemicals less often.
- TOP BRAND: Hot tub things is America’s #1 Trusted Brand of Hot Tub Chemicals.
- GUARANTEED PERFORMANCE: Safety Tested to Assure Quality, Guaranteed Performance.
- SMALL TABLETS: These are 1″ inch tablets so they can be easily dissolved in water.
$35.50 -
Hot Tub Things Filter (compatible with Sundance® 6473-164)
- Replacement for Sundance Spas Microclean Inner Filter 6473-164
- Inner Filter is used on Sundance Spas 880 Series and 850 Series
- Inner Filter used with 6473-165 Outer Filter
- 100% compatible with Sundance Spa Parts and Filters
- Height: 18.74″ Diameter: 5.63″
$35.95 -
Hot Tub Things Oxidizing Spa Shock (2.2 lb)
- BY ORGANIC BUILD UP!: Use shock weekly to control and prevent organic buildup that causes cloudy water!
- TOP BRAND: Hot tub things is America’s #1 Trusted Brand of Hot Tub Chemicals
- GUARANTEED PERFORMANCE: Safety Tested to Assure Quality, Guaranteed Performance
- PUREST CHEMICALS!: Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available
$38.50 -
Hot Tub Things Filter (compatible with Jacuzzi® 6000-383AJ)
- FULLY COMPATIBLE | The replacement filter fits perfectly in most modern J-300 series hot tubs, so you can purify your residential hot tub while saving money over name-brand Jacuzzi filters
- SUPERIOR FILTRATION | The pleated filtration fabric exposes the maximum surface area (60 sq ft) to your water flow
- SUITABLE FOR ALL CHEMISTRIES | The filter is compatible with bromine, chlorine, UV-ray, and the ProClear mineral sanitizer (sold separately)
$45.95 -
Hot Tub Things Filter (compatible with Sundance® 6540-501)
Please Note: This is the pleated portion. 14″ tall, 8.5″ in diameter. Most Sundance Spas hot tubs that use this filter will also need the disposable spun-polymer filter “doughnut,” part 6540-502.
- FULLY COMPATIBLE | The replacement filter fits perfectly in Sundance Select series hot tubs, so you can purify your residential hot tub while saving money over name-brand Sundance filters
- SUPERIOR FILTRATION | The pleated filtration fabric exposes the maximum surface area to your water flow
- SUITABLE FOR ALL CHEMISTRIES | The filter is compatible with bromine, chlorine, UV-ray, and the SunPurity mineral sanitizer (sold separately)
$47.95 -
SpaGuard Enhanced Shock (6 lb)
- Multi-purpose shock with four benefits in one: shock, clarifier, flocculent and pH buffer
- Restores water sparkle and removes unpleasant odors
- Treat and soak in as soon as 15 minutes*
- Compatible with chlorinated or brominated spas and those using ozone or ionization systems
$52.99 -
SilkBalance Shock Gems
- Non-chlorine MPS shock (single-dose)
- Eliminates odors and reduces organic contaminants
- Organic contaminant examples: boil oil, suntan lotion, etc.
- SilkBalance destroys contaminants thru oxidization
- 1 Shock Gem after spa use (2 people) or 2 Shock Gems after spa use (3+ people)
$59.99 -
Hot Tub Things Filter (compatible with Sundance® 6473-165)
Please Note: This is an outer filter only. Doesn’t include Hot Tub Things 6473-164 inner filter cartridge
- This is the OUTER FILTER ONLY. Doesn’t include Hot Tub Things 6473-164 inner filter cartridge. Again this doesn’t include the inner filter cartridge. You’ll have to buy the inner cartridge as well for a proper fitting in the spa.
$60.95 -
303® Aerospace Protectant (1 gal)
- For vinyl, rubber, and plastic
- Protects and preserves outdoor furnishings from moisture and UV damage
- Prevents fading and cracking
- Repels dust and lint for easier cleaning
- invented and made in USA
$64.95