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This Pool Supply Unlimited blog category contains posts concerning proper water chemistry for both pools and spas.
A Guide to Proper Pool Water Chemistry
A Guide to Proper Pool Water Chemistry
Take the fear out of pool chemicals & balance your pool water like a pro with Pool Supply Unlimited’s guide to pool water chemistry. Learn more today!
How to Open Your Pool in 7 Easy Steps
How to Open Your Pool in 7 Easy Steps
Opening a pool for the season takes a little more elbow grease than simply ripping off the cover and jumping in. We’ll walk you through how to open a pool after winter so you can get in, cool down, and kick off summer in crystal clear water just begging to be enjoyed.

Bubbling Over: The Fix for Foamy Hot Tubs
Bubbling Over: The Fix for Foamy Hot Tubs
Hot tub foaming is usually a sign that something is in your water or your chemicals are out of balance. But with a few adjustments and some expert tips, you can fix the problem quickly. Don’t let foam take over! Keep reading to learn what causes foam in a hot tub and how to get rid of foam in a ho...
Ultimate Guide to Clearing Up Cloudy Pool Water
Ultimate Guide to Clearing Up Cloudy Pool Water
Summer is around the corner, which means it's time to get your pool ready for swimming! But if you're one of the many pool owners dealing with cloudy pool water, have no fear—we've got you covered. From understanding why your water is murkier than usual to learning how to identify and ...
Are Pool Closing Chemicals Necessary?
Are Pool Closing Chemicals Necessary?
Retiring your pool for the winter is not a complicated procedure. Many D.I.Y pool owners successfully do this year after year and reopen in the spring with great success. If you do not balance and treat your water before closing up for the winter, you risk uncovering your pool in the spring to a mes...
How To Winterize A Swimming Pool
How To Winterize A Swimming Pool
Usually, winter is not the time of year that most people want to think about their swimming pools but, in reality it is one of the most important times to pay attention to your investment. Properly winterizing your swimming pool will avoid unnecessary problems and costly repairs come springtime.
How to Balance Your Pool or Spa pH Level
How to Balance Your Pool or Spa pH Level
Balancing your swimming pool water could be considered the most important job a pool owner has. Not only can out of balance water corrode surfaces and cause scale deposits, it can be irritating and even dangerous to swimmers. Balancing your water's pH is an important part of maintaining proper w...
How to Clean Your Pool Filter
How to Clean Your Pool Filter
If your pump is the heart of your pool or spa the filter is its kidneys. Daily, your filter removes dirt, oil, organic and inorganic substances. Having clean, healthy water is dependent on your filter operating at its peak performance and that is with a clean filter.
Why Is My Pool Green?
Why Is My Pool Green?
In my last post on How to Clean a Green Swimming Pool I addressed the steps to clearing up your pool after your pool turned green. But what you may not know is why your pool is turning green. It is important to know what is causing your water to turn green so you can prevent it in the future. This p...
How Do You Clean A Green Swimming Pool?
How Do You Clean A Green Swimming Pool?
Yesterday your pool was pristine, the kids were swimming all day and this morning you find the pool green and murky. Like any of us would be, you’re confused and wondering, why is my pool green and what should I do?
How To Clean Your Spa
How To Clean Your Spa
Small or large, at some point your spa is going to need a cleaning. This could be a complete drain and refill or just a touch up to get a spot of dirt off the floor. When a spa cleaning is needed can depend on how much the spa is getting used and the condition of the water. Continue reading to learn...
Apartment, Condo and Hotel Chemical Automation
Apartment, Condo and Hotel Chemical Automation
Maintaining what is commonly referred to as a commercial facility can be a daunting task. The proper equipment and a good understanding of how it all functions can mean the difference in success or failure. This article will hopefully education on the automation options and guide you through making ...
The Eight Components of Balanced Water
The Eight Components of Balanced Water
Understanding each of these eight components and what it does to achieve water balance is important information that every pool owner should posses. In this post we discuss each of these eight components and how they work together to achieve balanced swimming pool water.
Keeping Your Pool Water Balanced
Keeping Your Pool Water Balanced
All too often we see the damage that unbalanced water can cause. Water can corrode surfaces or deposit a white film or crusty, coarse substance called scale. Find out how to prevent the two types of unbalanced water conditions, corrosive and scaling.
Is My Salt Cell Making Chlorine?
Is My Salt Cell Making Chlorine?
"How do I know if my salt cell is making chlorine?". This may seem like a hard question to answer, but there is actually a very easy and effective method for finding out if your salt system is producing chlorine.
Phosphates & Nitrates: Stopping Algae Growth Before It Starts
Phosphates & Nitrates: Stopping Algae Growth Before It Starts
Algae is the arch enemy to many pool owners - Algae can wreak havoc and be very hard for a pool owner to get rid of. In this blog post we get to the root of fighting algae growth - stopping it before it starts by warding off phosphates and nitrates.
How To Maintain A Swimming Pool
How To Maintain A Swimming Pool
Having a regular pool maintenance schedule is key to keep your pool clean in-season. Check out our simple guide to pool maintenance to get started.

Converting to Salt-Based Chlorination
Converting to Salt-Based Chlorination
Converting chlorine pools to saltwater allows pool owners to avoid storing chlorine and hauling it out to the pool whenever needed, and the common complaints of skin irritation associated with high levels of chlorine (as well as its smell) are also quickly fading into the past. Today, we’re sharin...
Does My Salt Cell Need Replacing?
Does My Salt Cell Need Replacing?
Wondering if there's something to the sudden low salt or chlorine levels in your pool water? Here are some tips to help determine if your salt system is really to blame.
Alternative Sanitizers - Ultraviolet vs. Ozone
Alternative Sanitizers - Ultraviolet vs. Ozone
Both Ozone and UV systems are more natural, environmentally friendly alternatives to chemicals and their resulting bi-products. They are effective, safe and reliable methods of water sanitation. But what is the difference between Ozone and UV? And how do you know which one to choose when shopping fo...
How Mineral Sanitizers Work
How Mineral Sanitizers Work
Problem algae spots eliminated, lower chlorine use and sparkling clear pools with less work are all great reasons to invest in a mineral sanitizer today!
New Plaster Start-Up - Part 2
New Plaster Start-Up - Part 2
Often times new pool owners neglect one of the most important procedures in the ownership of a new pool. The process is called a new plaster startup. With the introduction of the Startup-Tec®, many startup issues have been greatly minimized.
New Plaster Start-Up - Part 1
New Plaster Start-Up - Part 1
The main objective in a pool start-up is to clear or get rid of the plaster scale (dust), and to balance and stabilize the water chemistry in the pool as soon as possible. Read more for some of the "do's and don'ts" for starting up a freshly plastered pool.
Chemicals 101
Chemicals 101
There are a lot of factors involved in getting pool water clean, crystal clear and into the natural looking condition that we have become accustomed to. Among the unsung heroes working behind the scenes are pool chemicals.
The Basics of Chlorine Generators
The Basics of Chlorine Generators
Silky smooth water and child-safe swimming environment are both assumptions of a “salt water pool”. Learn more about the facts and benefits of chlorine generators for pool water sanitation.
Extend the Life of Your Salt Cell
Extend the Life of Your Salt Cell
Extend your salt cells life by following these easy steps!
ABOUT THE STORE
Pool Supply Unlimited is an e-commerce company that loves water. We love to pump it, filter it, heat it, chlorinate it, light it up and stare at it while we're barbequing a fat, juicy steak. There are real pool professionals working here. Our guys have seen thousands of pools in their careers, no exaggeration. We are based in San Antonio, TX and can land most products to your door (within the 48 contiguous states) in less than a week.
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