Common pool maintenance myths debunked

In this guide, we're busting the most common pool maintenance myths—once and for all. And when you're ready to take the guesswork out of pool care, the Poolblue App (exclusively at poolblue.store/app) gives you instant, accurate analysis and exact dosing recommendations in just 5 seconds.
Myth #1: "If I Can Smell Chlorine, There's Too Much in the Pool"

The Truth: That strong "chlorine smell" actually means there's not enough free chlorine in your pool.

Here's the science: the smell comes from chloramines—compounds formed when chlorine combines with sweat, oils, urine, and other contaminants. Chloramines are a sign that your chlorine is "used up" and struggling to do its job.
What You Smell What It Actually Means
Strong chemical odour High chloramines = low free chlorine
No smell Free chlorine is doing its job
"Bleach" smell Usually chloramines, not chlorine

The fix: Shock your pool to break down chloramines and restore free chlorine levels. And remember: a properly balanced pool has little to no smell at all.
Myth #2: "Clear Water Means Safe Water"

The Truth: Crystal-clear water can still be unsafe.

Algae and bacteria can exist in water that looks perfectly clear. The only way to know your water is safe is to test it regularly—not just look at it.
What Looks Safe What Could Be Lurking
Sparkling clear water Bacteria, viruses, or parasites
No visible algae Microscopic algae spores
Fresh smell Imbalanced pH or chloramines

The fix: Test your water at least weekly—and use an accurate method. The Poolblue App takes the guesswork out by analysing your water from a simple photo and telling you exactly what you need to add.
Myth #3: "You Don't Need to Shock a Saltwater Pool"

The Truth: Saltwater pools need shocking too—sometimes even more frequently than traditional chlorine pools.

Saltwater systems generate chlorine continuously, which is great. But they can still develop chloramines, and they're still vulnerable to algae blooms and heavy bather loads. A salt cell produces a low, steady level of chlorine—it doesn't provide the "punch" of a shock treatment.

When to shock a saltwater pool:

After a pool party

After heavy rain

When combined chlorine is above 0.5 ppm

When water looks dull or cloudy

The fix: Use a non-chlorine shock or boost your salt cell to "superchlorinate" mode. And test regularly to know exactly when shocking is needed.
Myth #4: "Baking Soda Is the Same as Alkalinity Increaser"

The Truth: Yes and no. Baking soda (sodium bicarbonate) is the same chemical as alkalinity increaser—but only if you use the right kind and the right amount.
What to Use When It's Safe When to Avoid
Baking soda Raising alkalinity only If it contains additives (like baking powder)
Pool-brand alkalinity increaser Always safe More expensive, but no risk of additives

The catch: Using regular baking soda is cheaper, but you need to calculate the correct dosage for your pool volume. Too much, and you'll overshoot your alkalinity target.

The fix: If you're using baking soda, test carefully and add gradually. Or make it easy—use a product designed for pools, and let the Poolblue App tell you exactly how much to add.
Myth #5: "You Should Run Your Pump 24/7"

The Truth: Running your pump constantly wastes electricity and money.

While some circulation is essential, most pools only need 8–12 hours of pump run time per day—depending on the season, pool size, and bather load.
Pump Run Time Effect
24 hours/day $800–$1,200+ per year in electricity
8–12 hours/day $300–$500 per year with a variable-speed pump
Too little (under 6 hours) Poor filtration, algae risk

The fix: Run your pump long enough to turn over your pool volume at least once daily. Use a timer to automate it, and consider upgrading to a variable-speed pump for energy savings.
Myth #6: "You Don't Need to Test CYA (Stabiliser) Often"

The Truth: Cyanuric acid (CYA) builds up over time—especially if you use trichlor tablets exclusively—and can cause "chlorine lock" if it gets too high.
CYA Level Effect
30–50 ppm Ideal—chlorine is protected from UV
50–80 ppm Chlorine effectiveness starts to decline
80+ ppm Chlorine is "locked"—ineffective even at high readings

The fix: Test CYA at least monthly. If it's too high, the only solution is partial draining and refilling. The Poolblue App tracks your levels and recommends the right actions.
Myth #7: "Algaecide Prevents Algae—You Don't Need Chlorine"

The Truth: Algaecide is a preventative aid—it's not a substitute for chlorine.
Product Job What It Can't Do
Chlorine Kills bacteria and algae Prevents growth on its own
Algaecide Prevents algae growth Sanitise water or kill bacteria

The fix: Use chlorine as your primary sanitiser. Add algaecide weekly as a backup, especially during hot weather or after heavy rain.
Myth #8: "You Can Add All Chemicals at the Same Time"

The Truth: Adding multiple chemicals at once is dangerous—and wastes product.

Different chemicals react with each other. Chlorine and acid, for example, release toxic gas when mixed. Even "safe" combinations can neutralise each other, meaning you're pouring money down the drain.

The correct order:

Alkalinity increaser (if needed)

pH adjuster (if needed)

Chlorine / sanitiser

Shock (in the evening)

The fix: Add one chemical at a time. Allow circulation time between additions. And never mix chemicals outside the pool.
Myth #9: "Expensive Test Kits Are Always Better"

The Truth: The best test kit is the one you use accurately and consistently.
Kit Type Pros Cons
Test strips Quick, easy, affordable Colour matching can be subjective
Liquid drop kits More accurate Requires technique and time
Digital testers Very accurate More expensive
Poolblue App Instant analysis, exact dosing, no guesswork Free with poolblue.store purchase

The fix: Use a method you trust—and use it regularly. The Poolblue App is the most advanced option: snap a photo of your water, get accurate results in 5 seconds, and receive exact dosing recommendations.
Myth #10: "You Only Need to Test in Summer"

The Truth: Water chemistry changes year-round—even in winter.
Season What Happens Why Testing Matters
Summer High heat, heavy use, UV degradation Chlorine demand spikes
Autumn Leaves, debris, rain Organic matter consumes chlorine
Winter (closed) Water sits stagnant Algae and bacteria can still grow
Winter (open) Lower use but still active pH can drift, equipment at risk

The fix: Test year-round—even if you're not swimming. The Poolblue App tracks your water remotely, so you always know what's happening.
Myth #11: "A Saltwater Pool Is Maintenance-Free"

The Truth: Saltwater pools are lower maintenance—not no maintenance.
Task Saltwater Pool Traditional Pool
Add chlorine No (generated from salt) Yes
Test chemistry Yes (still need to test) Yes
Clean salt cell Yes (annually) N/A
Monitor salt levels Yes N/A
Adjust pH Often—salt systems raise pH Yes

The fix: Test regularly, clean your salt cell annually, and keep pH in check. The Poolblue App makes it easy to track everything in one place.
Stop the Guesswork—Use the Poolblue App

Reading test strips, calculating dosages, remembering the right order—it's a lot. And if you're new to pool ownership, it's overwhelming.

That's why poolblue.store created the Poolblue App.
How It Works
Step What Happens Time
1 Take a photo of your pool water (test strip or drop test) 2 seconds
2 The app analyses the results instantly 5 seconds
3 Exact recommendations—what to add, how much, in what order Instant

It doesn't matter what type or brand of test you use. The Poolblue App reads your results and tells you exactly what your pool needs.
Why Pool Owners Love the Poolblue App
Feature Benefit
Photo-based analysis No more squinting at colour charts
Exact dosing, order, and quantities Never guess again
Automatic inventory tracking Know what you have and what you need—anytime, anywhere
Tips and tricks Pro-level guidance for a perfect pool
Free for poolblue.store customers An indispensable tool—exclusive to you
Get the App

The Poolblue App is available exclusively to poolblue.store customers. When you shop with us, you get access to the most advanced pool water analysis tool on the market.

Visit poolblue.store/app today to learn more. Save time, money, and effort—and enjoy a perfect pool all season long.
Final Verdict: Know the Facts, Trust the Tools

Pool myths are everywhere—but now you know the truth. Clear water isn't always safe. That smell isn't too much chlorine. Saltwater pools still need shocking. And test strips alone aren't enough if you're not reading them correctly.

The best way to avoid the myths is to test accurately and trust the data. The Poolblue App gives you accurate results in seconds—and tells you exactly what to add, in what order, and how much.

Ready to stop guessing and start knowing? Visit poolblue.store/app to access the app, and explore our full range of pool products at poolblue.store.

Your perfect pool starts with the facts. And the Poolblue App delivers them.