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SpaWise Support

Clear help for hot tub and swim spa owners — from water-care basics to common problems, product advice and step-by-step support.

Quick links: Cloudy waterLow sanitiserHigh pHFoamingRoutine care

Water Care Basics

Learn the essentials for clean, comfortable and balanced hot tub water.

Common Water Problems

Get clear answers for cloudy water, smells, foam and balance issues.

Maintenance & Routine

Keep your spa running well with filters, testing, cleaning and reminders.

Buying & Product Advice

Find out which chemicals, accessories and products you actually need.
Featured

Start with the most useful guides

Water Care

Why is my hot tub water cloudy?

Understand the most common causes of cloudy water and the simple steps to clear it fast.

Read guide Sanitiser

What should I do if sanitiser is low?

Learn what low sanitiser means, the risks, and how to get your water safe and balanced again.

Read guide Chemicals

Hot tub chemicals explained simply

A beginner-friendly guide to sanitiser, pH, alkalinity and the products that keep water perfect.

Read guide
Browse by problem

Find help by what you're seeing

Pick the issue closest to what you are dealing with — we'll show you the steps to fix it.

Latest support guides

Just published

Common Problems

Why Is My Hot Tub Chlorine or Bromine Low? Common Reasons Sanitiser Drops

A beginner-friendly guide explaining why chlorine or bromine can test low in a hot tub and what owners should check first. Covers heavy use, body products, pH and alkalinity, dirty filters, high water temperature, old water and repeated low sanitiser readings.
Common Problems

Why Is My Hot Tub Foamy? Common Causes and First Steps

A beginner-friendly guide explaining why hot tub water can become foamy and what owners should check first. Covers detergent in swimwear, lotions, body oils, low sanitiser, pH and alkalinity, dirty filters, anti-foam products and when water may need replacing.
Common Problems

Why Has My Hot Tub Water Turned Green? Algae, Metals and Sanitiser Explained

A beginner-friendly guide explaining why hot tub water can turn green and what owners should check first. Covers low sanitiser, algae, metals, pH and alkalinity, dirty filters, recent use, product residues and when draining and refilling may be the better option.
Cloudy water

Why Is My Hot Tub Water Cloudy? What to Check First

A beginner-friendly guide explaining why hot tub water can become cloudy, milky or hazy, and what owners should check first. Covers sanitiser levels, pH, alkalinity, filters, recent use, everyday contaminants and when old water may need replacing.
Clear hot tub water Beginner friendly
Start here

New to hot tub water care? Start here

A short, friendly walkthrough that gives you a confident baseline for everyday spa care.

  • Learn the basics. Understand the key water-care essentials.
  • Understand your test strip. Know what each reading means.
  • Know what to adjust first. Focus on the most important steps.
  • Build a simple routine. Create a weekly routine that works.
See beginner guides
Popular questions

Quick answers to the questions we hear most

Can I use the hot tub if sanitiser is low?
We strongly recommend not using your hot tub if sanitiser levels are below the safe range. Low sanitiser means the water is not properly disinfected, which can cause skin irritation or infections. Top up your sanitiser, let it circulate for at least 30 minutes, then retest before getting in.
What should I fix first — pH or sanitiser?
Sanitiser should always be your first priority, as it protects users from bacteria. However, if pH is very high (above 8.0) or very low (below 6.8), it can make sanitiser much less effective. As a rule: check sanitiser first, then pH, then alkalinity. Getting all three in range gives the cleanest, safest water.
How often should I change spa water?
Most hot tub owners should do a full water change every 3 to 4 months, depending on usage. Regular testing and correct chemical dosing can help extend the life of your water. If your water becomes persistently cloudy, foamy, or difficult to balance, it may be time for a fresh fill.
What is the difference between chlorine and bromine?
Both chlorine and bromine are sanitisers that kill bacteria and keep your water safe. Chlorine works faster and is slightly more cost-effective, but can be more sensitive to pH changes. Bromine is gentler on skin, stays stable over a wider pH range, and is often preferred for indoor spas.

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