Hot tub chemicals and supplies
Everything you need to keep hot tub water clear and comfortable, from sanitizer and shock to test strips, pH and alkalinity adjusters, filters and filter cleaner. Bring a water sample to our Langley showroom and we'll test it and tell you what your tub needs.
Healthy hot tub water takes a sanitizer to kill bacteria, a shock to break down what bathers leave behind, test strips to see where you stand, and a few products to keep pH, alkalinity and calcium in range. You'll find all of them at our Langley showroom, along with replacement filters and filter cleaner.
What a basic kit contains
| Product | What it does |
|---|---|
| Sanitizer (chlorine or bromine) | Kills bacteria and keeps the water safe to use |
| Shock or oxidizer | Breaks down sweat, oils and lotions, and refreshes the sanitizer |
| Test strips | Show sanitizer, pH, alkalinity and often hardness in seconds |
| pH increaser and decreaser | Keep pH in range, so the sanitizer works and the water feels comfortable |
| Alkalinity increaser | Buffers the water so pH doesn't swing |
| Calcium hardness increaser | Raises calcium in very soft water |
| Filter cleaner | Dissolves the oils and scale that rinsing leaves behind |
| Defoamer | Knocks down foam quickly, while you fix the cause |
Useful extras include scale and stain control, clarifier, a line flush for draining day, and cover cleaner and conditioner.
Chlorine or bromine?
Both work well. The choice is mostly about routine:
- Chlorine, usually granules made for hot tubs, acts quickly and is easy to adjust after a busy evening. It's normally added after use or every few days.
- Bromine, usually tablets in a floating dispenser, releases slowly and stays steady in hot water, so it suits people who'd rather top up a dispenser than dose after every soak.
Pick one and stick with it; switching from one to the other is best done with a drain and refill. Ozone and UV systems reduce how much sanitizer a tub uses, but they don't replace it. If your tub has a salt system, it makes chlorine for you: see saltwater hot tubs.
Filters
The filter does much of the work of keeping water clear. Rinse it every couple of weeks, soak it in filter cleaner every month or two, and replace it when the pleats are torn or flattened or it won't come clean. Filters come in many sizes and fittings, so bring the old one to the showroom and we'll match it, or tell us your tub's make and model. A spare means the tub keeps running while one dries.
Your local water matters
Tap water across the Fraser Valley varies more than most people expect, and it changes what a fresh fill needs:
- Very soft water: most homes in Langley, Maple Ridge, Abbotsford and Mission get very soft water. That's good for avoiding scale, but water with too little calcium tends to foam and can be hard on heaters and seals, so you'll likely need calcium hardness increaser when you fill.
- Soft water: Surrey's supply is a little harder but still soft, and most tubs there benefit from added calcium too.
- Harder water: Aldergrove's water is much harder, and Chilliwack's groundwater sits in between. In harder water, scale control helps protect the heater and keeps white deposits off the shell and jets.
Our water care guide explains the target ranges and how to balance a fresh fill.
Water testing at the showroom
Bring a sample of your tub water to the showroom and we'll test it and tell you what to add, and in what order. Fill a clean container from about elbow depth, away from the jets, and bring it in within a few hours.
Starting out with a new tub
A sensible first order:
- Test strips
- Your sanitizer: chlorine granules, or bromine tablets with a dispenser
- A non-chlorine shock
- pH increaser and decreaser, and alkalinity increaser
- Calcium hardness increaser if you're on very soft water
- Filter cleaner and a spare filter
When we install a tub, we balance the first fill and walk you through the routine. For the bigger jobs, see maintenance visits.
FAQ
Questions
Something else on your mind? Ask us when you request a quote.
What chemicals do I need for a hot tub?
A sanitizer (chlorine or bromine), a shock, test strips, and products to adjust pH and alkalinity. On very soft water, as in most of Langley, Maple Ridge, Abbotsford and Mission, add calcium hardness increaser too, and keep filter cleaner on hand.
How often should I shock my hot tub?
Typically once a week, and after heavy use. Follow the directions on the product, and leave the cover open for a while afterwards so the gas can escape.
Why is my hot tub water foamy?
Foam usually comes from soaps, lotions and body oils building up, and very soft water with low calcium makes it worse. Defoamer clears it quickly, but shocking, balancing the water and, if needed, a drain and refill fix the cause.
Can I use pool chemicals in a hot tub?
Not as a rule. A hot tub holds far less water at a much higher temperature, and some pool products, such as slow-dissolving chlorine pucks, aren't suitable. Use products made for hot tubs and dose for your tub's volume.
Can you match my hot tub filter?
In most cases, yes. Bring the old filter to the showroom, or tell us the make and model of your tub.
Guides
Related guides
Hot tub water care: chemistry made simple for Fraser Valley water
Balanced hot tub water comes down to four numbers: alkalinity, pH, calcium and sanitizer. Here's how to keep them in range, and why most Fraser Valley tap water needs calcium added.
Water careHot tub maintenance: a simple schedule for every season
What to do every week, month and season to keep a hot tub clean and running, from filter cleaning to drain-and-refill and winter care.
Valley Hot Tubs
Ask about chemicals or filters
Tell us your tub's make and model, or what's going on with the water.