AquaDoc Total Alkalinity Increaser
Sodium bicarbonate booster that raises total alkalinity, stabilizes pH, and helps maintain balanced, comfortable hot tub water.
The Supply Shop from The Hot Tub Report
What does your hot tub need?
Whether you’re cleaning a filter or choosing a water test kit, I’ll help you find the supplies that fit your routine.
The essentials
Shop by category
Looking for a filter cleaner or a fresh bottle of test strips? Pick the category that matches what you need.
Filters & Cleaning
Replacement filters and supplies for cleaning and routine care.
Hot Tub Accessories
Useful accessories for maintenance and everyday hot tub use.
Hot Tub Chemicals
Sanitizers, water balancers, and other hot tub water-care products.
Water Testing
Testing supplies that help you check your water.
Your routine. Your essentials.
Shop by sanitizer system
Find supplies for the system you use. Choose your routine, then check each product’s compatibility with your hot tub and equipment.
Chlorine
Find chlorine products and supplies for your water-care routine.
Browse suppliesBromine
Browse bromine products, dispensers, and testing supplies.
Browse suppliesSaltwater Systems
Find supplies for your specific saltwater system.
Browse suppliesFROG @ease
Browse cartridges and test strips for your @ease setup.
Browse suppliesFor saltwater and FROG @ease products, check your system model and cartridge format before buying.
Start with the water
Test first. Treat with a reason.
A dependable care routine begins with a test, not a handful of products. Check your hot tub manual, measure what matters, and make changes in the order your product labels recommend.
✓ Use products made for your sanitizer system.
✓ Measure and follow the label; never estimate a dose.
✓ Retest after adjustments and store chemicals safely.
A little know-how goes a long way
Better choices start with better questions.
Get practical guidance from The Hot Tub Report before choosing your next hot tub essential.
Around the supply shop
Here are a few items from the shop today. Open a product to see what it’s used for and whether it fits your hot tub.
Affiliate disclosure: We do not sell or ship products directly. Purchases are completed on Amazon. As an Amazon Associate, I earn from qualifying purchases.
Leisure Time Foam Down
Easy-to-use spa defoamer that quickly helps reduce unwanted foam caused by soaps, oils, lotions, and other contaminants.
Aquadoc Metal Prevent
Guard your hot tub shell from iron and copper staining with AquaDoc Metal Prevent, which keeps dissolved metals from oxidizing and staining, ideally added at fill.
SpaGuard pH Increaser
SpaGuard pH Increaser for Hot Tubs helps raise low pH levels to support balanced, comfortable spa water. By maintaining proper water chemistry, it helps protect hot tub equipment from corrosion and keeps your spa ready for relaxing soaks.
Swim N Soak Trusted Picks
These are products I recommend. Open a pick and I’ll tell you why I chose it and who I think it’s best for.
Affiliate disclosure: We do not sell or ship products directly. Purchases are completed on Amazon. As an Amazon Associate, I earn from qualifying purchases.
JBL Waterproof Speaker
The JBL Charge 6 for the tub — IP68 waterproof, dustproof & drop-proof, up to 28 hours of playtime, and a built-in power bank that charges your phone while it plays.
SpaGuard Filter Cleaner
Easy-to-use filter cleaner that removes oils, scale, and buildup to improve water flow and support cleaner hot tub or pool water.
Mini Measuring Cup
A clear, flexible silicone mini cup for the tub — holds up to 2 ounces (4 tablespoons, 12 teaspoons, 60 milliliters), with markings for each. Squeeze the rim to form a pour spout and measure small amounts of liquid water-care products without the drips.