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Hot Tub & Swim Spa Water Care Chemicals | Western Tub and Pool
Keep your hot tub, swim spa, or pool water crystal clear, safe, and inviting — all year long. At Western Tub and Pool, we carry a comprehensive range of water care chemicals to suit every make, model, and maintenance routine. Whether you're a first-time owner or a seasoned spa enthusiast, we have everything you need to keep your water balanced and your equipment protected.
Shop and order at Western Tub and Pool
[Browse Our Chemical Catalogue] | Call us: 1-855-248-0777 | Email: fixmytub@gmail.com
Why Water Care Matters
Your hot tub or swim spa holds the same water for weeks — sometimes months. Without the right chemical balance, that water can quickly become a breeding ground for bacteria, cause skin and eye irritation, and damage your equipment over time. Proper water care protects your investment, extends the life of your spa, and ensures every soak is safe and comfortable.
Not sure where to start? Western Tub and Pool offers free in-home water care tutorials to walk you through the ins and outs of your specific spa, hot tub, or pool. Our team comes to you.
Shop Hot Tub & Swim Spa Water Care Chemicals by Type
We carry products from trusted brands including FreshWater, Leisure Time, FROG, SpaGuard, and more. Browse by chemical type below, or call us at 1-855-248-0777 to speak with one of our water care specialists.
Sanitizers
Sanitizers are the foundation of any water care routine. They eliminate bacteria and harmful microorganisms that enter your water every time someone soaks.
Chlorine (Sodium Dichlor Granules)
The most widely used hot tub sanitizer. Cost-effective, fast-dissolving, and highly effective against bacteria and algae. Ideal for most hot tub and swim spa models.
- Target Level: 1–3 ppm
- Packaging: Available in 1 lb, 2 lb, and 5 lb containers
Bromine Tablets / Granules
A gentler alternative to chlorine. Bromine ionizes contaminants rather than oxidizing them, producing no harsh odor. It lasts longer in the water and is easier on sensitive skin.
- Target Level: 3–5 ppm
- Best For: Indoor hot tubs or covered spas; sensitive skin users
- Packaging: Available in tablet and granular formats; 1.5 lb to 4 lb containers
Biguanide (Non-Chlorine Sanitizer)
A chlorine-free option sold under brand names such as BaquaSpa. Odorless at every stage, and known to leave water feeling silky smooth. Note: check compatibility with your spa manufacturer before use.
- Target Level: 30–50 ppm
Mineral Sanitizers
Mineral-based systems (using silver and copper) reduce the amount of chlorine or bromine required. Easy to manage — simply insert the mineral stick into your filter and replace every 3–4 months.
- Supplemental Chlorine Required: 0.5 ppm | Bromine: 1.0 ppm
Salt Systems
A salt chlorine generator converts dissolved salt into chlorine, producing softer, gentler water. Ideal for owners who want a more natural feel without sacrificing sanitation.
- Target Salt Level: 2,000–3,000 ppm (2,500 ppm ideal)
- Chlorine Level: 1–3 ppm
Shock Treatments
Shock your spa weekly or after heavy use to break down chloramines, body oils, lotions, and other organic contaminants. Shock restores water clarity, eliminates odors, and allows your sanitizer to work more effectively.
Non-Chlorine Shock (MPS — Monopersulfate)
The most popular choice for regular weekly shocking. It oxidizes contaminants without raising chlorine levels significantly, allowing you to re-enter the spa sooner after treatment.
Chlorine Shock
A fast-acting, high-dose chlorine treatment used when sanitizer levels drop critically low, or when dealing with cloudy, foamy, or visibly contaminated water.
- When to shock: Weekly, after heavy bather loads, after a water change, or whenever water appears cloudy or develops an odor
- Packaging: Available in 1 lb and 2 lb pouches; granular format
pH Adjusters
pH is one of the most important factors in water chemistry. When pH falls out of range, sanitizers become less effective, and your water can irritate skin and eyes — or damage spa equipment.
pH Increaser (Sodium Carbonate)
Raises pH when the water becomes too acidic.
pH Decreaser (Sodium Bisulfate)
Lowers pH when the water becomes too alkaline, and also helps reduce total alkalinity.
- Target pH Range: 7.4–7.6 (acceptable range: 7.2–7.8)
- Packaging: Available in 1 lb and 2 lb containers
Total Alkalinity Adjusters
Total Alkalinity (TA) acts as a buffer for your pH level, preventing sudden swings that can damage equipment or irritate bathers. Always balance alkalinity before adjusting pH.
Alkalinity Increaser (Sodium Bicarbonate)
Raises TA when levels fall too low. Low alkalinity causes acidic water, which is corrosive to spa components.
- Target TA Range: 100–150 ppm (80 ppm minimum)
- Note: To lower TA, use a pH Decreaser — there is no standalone alkalinity decreaser
Calcium Hardness Adjusters
Calcium hardness measures how much dissolved calcium is in your water. Too little, and the water becomes corrosive, eating away at your shell, pipes, and equipment. Too much, and scale builds up on surfaces and jets.
Calcium Hardness Increaser (Calcium Chloride)
Raises calcium hardness when levels fall below the minimum threshold.
- Target Range: 175–250 ppm
- To lower: Partially drain and refill with fresh water
- Packaging: Available in 1 lb and 2 lb containers
Sequestering Agents & Scale Inhibitors
Sequestering agents bind metals and minerals (such as iron, copper, and calcium) that are naturally present in tap water. Without them, these elements can stain your spa shell, cloud your water, or build up as scale on your heating elements and jets.
- When to use: When filling or refilling your spa with fresh water
- Also use: If water appears brown, orange, green, or develops an unusual color after filling
Water Clarifiers
Water clarifiers work by grouping tiny suspended particles together so your filter can capture them more effectively. They are a reliable short-term solution for cloudy water.
- Best used: Before gatherings, or as a temporary fix while you address the underlying chemical imbalance
- Packaging: Liquid formula, typically 1 qt bottles
Defoamers
Foam is usually caused by a buildup of body oils, cosmetics, lotions, and detergents in the water. A small dose of defoamer dissolves surface foam quickly. Note that persistent foam is a sign of an underlying water balance issue.
- When to use: Whenever foam appears on the water surface
- Packaging: Liquid formula, typically 1 qt bottles
Enzymes
Hot tub enzymes break down organic contaminants — body oils, sunscreen, and other residues — before they cloud your water or form a scum ring on the shell. While not essential, they can noticeably reduce the frequency of water changes.
Test Strips & Liquid Test Kits
You cannot balance your water without knowing what it needs. Always test before adding any chemicals. Look for test strips that check for:
- Free and total chlorine or bromine
- pH
- Total alkalinity
- Calcium hardness
- Cyanuric acid (for outdoor spas using chlorine)
FreshWater 5-Way Test Strips — available at Western Tub and Pool
Water Chemistry Quick-Reference Chart
|
Parameter |
Target Range |
Adjust With |
|---|---|---|
|
pH |
7.4–7.6 |
pH Increaser / pH Decreaser |
|
Total Alkalinity |
100–150 ppm |
Alkalinity Increaser / pH Decreaser |
|
Free Chlorine |
1–3 ppm |
Chlorine Granules / Shock |
|
Bromine |
3–5 ppm |
Bromine Tablets / Granules |
|
Calcium Hardness |
175–250 ppm |
Calcium Hardness Increaser |
|
Salt (Salt Systems) |
2,000–3,000 ppm |
Spa Salt |
Compatible Hot Tub & Swim Spa Models
Our water care chemicals are compatible with a wide range of hot tub and swim spa brands and models, including units controlled by HydroQuip control systems, as well as spas equipped with standard filtration and heating components.
Brands and model families our chemicals are compatible with include (but are not limited to):
- Hot Spring Spas (all series)
- Caldera Spas
- Jacuzzi Hot Tubs
- Sundance Spas
- Bullfrog Spas
- Master Spas & Swim Spas
- Marquis Spas
- PDC Spas
- Arctic Spas
- LA Spas
- Tiger River Spas
- Coleman Spas
- Dimension One Spas
- Cal spas
- beach comber
- Strong spa
- Coast spa
Not sure if our products are right for your model? Check our online catalogue or call us at 1-855-248-0777 — we'll confirm compatibility for your specific make and model.
Frequently Asked Questions
How often should I add chemicals to my hot tub?
Sanitizer (chlorine or bromine) should be added after each use or at least 2–3 times per week to maintain safe levels. Shock treatments are typically applied weekly, or after heavy use. pH and alkalinity should be checked and adjusted based on your test results — usually 2–3 times per week as well.
How often should I test my hot tub water?
Test your water at least 2–3 times per week. If you use the spa frequently or host gatherings, test it more often. Regular testing catches imbalances early, before they cause cloudy water, equipment damage, or skin irritation.
Can I use the same chemicals for my swim spa and my hot tub?
Yes. The same chemical types are used in both hot tubs and swim spas. The main difference is volume — swim spas hold significantly more water, so dosing amounts will be higher. Always calculate doses based on your spa's water capacity, and refer to product packaging for guidance.
What should I do first when balancing my water — pH or alkalinity?
Always balance total alkalinity first. Alkalinity acts as a buffer that stabilizes your pH. Once alkalinity is in the correct range (100–150 ppm), adjust pH as needed. Trying to fix pH before alkalinity is balanced often results in unstable readings.
Is it safe to use the hot tub right after adding chemicals?
It depends on the chemical. After adding shock or sanitizers, wait at least 15–30 minutes with the jets running and the cover off before re-entering. Always re-test the water before soaking to confirm levels are within the safe range.
What causes foamy water, and how do I fix it?
Foam is typically caused by a buildup of body oils, shampoo, lotions, or detergent residue in the water. Use a defoamer for an immediate fix, and follow up by shocking the water and checking your sanitizer levels. Showering before entering the spa significantly reduces foam over time.
Do you offer in-home tutorials on water care?
Yes. Western Tub and Pool provides free in-home tutorials to help you understand the specific water care requirements for your spa, hot tub, or pool. Contact us to schedule a visit.
Shop and Order at Western Tub and Pool
Clear water doesn't have to be complicated. Whether you're managing a daily soak routine or troubleshooting a water care issue, Western Tub and Pool has the chemicals, the knowledge, and the support to help you get it right.
Browse our full catalogue online, or reach out to our team directly — we're here to help.
[Browse Our Full Water Care Catalogue]
Need assistance?
Call us: 1-855-248-0777