Hot tub blog

Swim University · May 15, 2026

How to Use Calcium Chloride in Your Pool

Calcium chloride is the go-to chemical for raising total calcium hardness in a pool. If you’ve ever shopped for a “calcium hardness increaser” at a pool store, that’s the same chemical just in a pricier package. Getting your total calcium hardness right protects your pool surfaces, keeps your equipment running longer, and helps you avoid […] The post How to Use Calcium Chloride in Your Pool appeared first on Swim University.

Read full article →

Medium · Hot Tub · May 15, 2026

The Best Hot Tubs for Airbnb That Actually Pay for Themselves

I never thought a hot tub would become my Airbnb’s secret weapon—until my occupancy rate jumped 40% after installing one. The best hot… Continue reading on Medium »

Read full article →

Swim University · May 1, 2026

Pool Filter Balls Review (Do They Really Work?)

Pool FilterBalls promise better filtration, less backwashing, and easier maintenance than sand. But do they actually deliver? If you’ve ever lugged a huge bag of sand to your filter, you already understand the appeal. FilterBalls weigh almost nothing. One pound (0.45 kg) of FilterBalls replaces 100 pounds (45.4 kg) of sand. That alone gets a […] The post Pool Filter Balls Review (Do They Really Work?) appeared first on Swim University.

Read full article →

Swim University · May 1, 2026

Filter Glass vs. Sand: Which Pool Filter Media is Better?

If your sand filter is getting older, you might be wondering whether it’s worth sticking with traditional sand or switching to glass. Glass media has been gaining traction with pool owners who want cleaner water and less maintenance. It filters better and lasts longer as sand. But it’s more expensive, and it might be worth […] The post Filter Glass vs. Sand: Which Pool Filter Media is Better? appeared first on Swim University.

Read full article →

Swim University · Apr 24, 2026

PoolRx Review for Eliminating Algae

PoolRx promises cleaner pool water, fewer chemicals, and less algae. But before you spend money on an algae-killing cylinder that lives in your skimmer or pump basket, you probably want to know if it actually delivers. We dug into how PoolRx works, how fast it works, and what it costs so you can decide for […] The post PoolRx Review for Eliminating Algae appeared first on Swim University.

Read full article →

Master Spas · Apr 22, 2026

Hot tub features worth the investment (and which matter less)

Shopping for a hot tub can feel a bit like shopping for a car. Some features seem unnecessary at first — until you have them. Heated seats once felt like a luxury. Now, many people wouldn’t want to go without them. The same can be true with certain spa features. Thoughtful seating design, easy water Continue Reading The post Hot tub features worth the investment (and which matter less) appeared first on Master Spas Blog.

Read full article →

Hot Spring Green · Apr 20, 2026

Everything You Need to Know About Endless Pools’ Swim Spas

What is a Swim Spa? A swim spa is a versatile aquatic system designed for both exercise and leisure. Unlike a traditional pool, a swim spa uses a powerful adjustable current that allows you to swim in place. This makes it ideal for homeowners who want a lap pool experience without the space, cost, or […] The post Everything You Need to Know About Endless Pools’ Swim Spas appeared first on Hot Spring Spas of Iowa and the Twin Cities.

Read full article →

Swim University · Apr 17, 2026

How to Use Soda Ash in a Pool to Raise pH

Soda ash is an effective and often cheaper way to raise your pool’s pH. But add it the wrong way, and you’ll end up with a pool that looks like a glass of milk. Here’s everything you need to know to use soda ash in a pool. What Is Soda Ash? Soda ash, a.k.a. sodium […] The post How to Use Soda Ash in a Pool to Raise pH appeared first on Swim University.

Read full article →

Master Spas · Apr 17, 2026

Treat mom to a relaxing Mother’s Day

Love. Joy. Comfort. Laughter. Our moms, or mother figures, bring so much to our lives — day in and day out. Mother’s Day is a day where we can celebrate what she gives by letting her know just how special she is. But it can be challenging to find just the right gift her. We Continue Reading The post Treat mom to a relaxing Mother’s Day appeared first on Master Spas Blog.

Read full article →

Swim University · Apr 16, 2026

Simple Scoop Review: Is It Worth Using for Pool Maintenance?

If you’ve ever walked into a pool store and stared down a wall of chemicals, each one promises to solve a different problem. Products like Simple Scoop by Pool Day are betting you’d rather grab one bucket and be done with it. But is it worth it? And will Simple Scoop solve all of your […] The post Simple Scoop Review: Is It Worth Using for Pool Maintenance? appeared first on Swim University.

Read full article →

Swim University · Apr 15, 2026

Pool Opening Tips to Get Your Pool Ready Fast

Opening your pool the right way saves you time and gets you swimming faster. Follow these steps in the correct order, and your water will clear up quickly while your equipment runs smoothly all season long. Here’s how to open your pool: When to Open Your Pool Plan to open your pool when daytime temperatures […] The post Pool Opening Tips to Get Your Pool Ready Fast appeared first on Swim University.

Read full article →

Master Spas · Apr 14, 2026

Hot tub insulation guide: Full foam vs thermal shield

They say it’s what’s on the inside that counts. When you’re researching hot tubs, that turns out to be more true than expected. Jets, seating, size, and overall design usually get the most attention early in the process. Those are the features you can picture yourself enjoying. But as you begin comparing models more seriously, Continue Reading The post Hot tub insulation guide: Full foam vs thermal shield appeared first on Master Spas Blog.

Read full article →