AquaChek Yellow 4-Way Pool and Spa Test Strips - 50 Yellow Test Strips - Swimming Pool Test Strips For pH, Free Chlorine, Total Alkalinity, and Cyanuric Acid - Quick and Accurate Results - Testing Kit

Works well, very easy to use

Always accurate and very helpful in keeping the pool looking great.

This works well

Works perfect for what we need. Only 4 color bars to compare is all we wanted to check and balance the water. Too many bars and colors adds confusion and does not seem as accurate in some of the more expensive testers. Keep a separate testing kit for phosphates and you are set.

Tried many types of pool test strips for our salt water pool, these are the best! Fast, easy to read and understand.

These are in no way a replacement for doing a detailed water test or taking it to a store like Leslie’s for a very accurate test, which I recommend doing at least once per month. But, they are the most accurate strips I have found for quickly ballpark validating the 4 key items the strips test for on my weekly maintenance day. They’re indispensable, but you should definitely either get a legit test kit or take a water sample to a local pool store at least once per month for a thorough check. It’s also worth noting these 4 key items aren’t the only things you need to know. For example, if you have a salt water pool, they don’t test for salt levels. Also, some readings can be skewed based on your phosphate levels. These really are a handy tool, but don’t rely on them solely.

For the past 28 years I have checked our pool’s water using reagents. We’ve never had any major problems, and I attributed that success to a sensitive liquid kit and diligent upkeep. Not too long ago a friend stopped by—he owns a local pool and supply company. He casually asked how we checked our water. When I told him, he laughed and asked why when there are much quicker and just as accurate test strips available. He specifically suggested I give these a try.Having worked in a laboratory, I was highly skeptical of test strips in general, but after using these, I’m eating crow. Accuracy is top-notch and how nice that four tests are done in just 15 seconds. What I really like is a full description how to correct problems should pH, free chlorine, total alkalinity or stabilizer be out of normal range. The product insert that comes with the strips is invaluable.Don’t wait 28 years to change the way you check your pool’s water conditions. These truly deserve five stars. After repeatedly comparing the strips to reagent testing, I’m convinced they work just as well, are definitely a quicker testing method and in the long run, cheaper to purchase each summer season. By the way, Amazon’s prices were several dollars cheaper than anywhere I could buy them locally. Included is a photo of AquaChek’s water chemistry guide and treatment tables.

This is one of the most accurate strip tests you can buy. It is fast, accurate, and easy to read. There is only one better and it is the pool master 6 way test which also includes total chlorine/bromine vs just free chlorine like this test.( it also includes better plastic strips not paper) Once your chlorine levels are in range just having free chlorine is fine. When you are low you need to see the total chlorine as well because free chlorine does not even show up and if it does it goes away fast. Knowing what the total chlorine level is helps accurately add more chlorine which this test does not have. The pool master test and this test are always identical they both are very accurate and repeatable. I prefer the pool master but I also like to have a bottle of these as well. It is much cheaper to use test strips often to to burn through all your chemicals guessing.*** I tried over 7 other brands of test strips all highly rated on Amazon. NONE of them were anything close to as good as the two mentioned above. They may of been good for half the test but the other half they were terrible. I have no need to buy any other test strips other than pool master 6 and this aqua check. Also having a test strip that is repeatable and accurate save so much time and money.** the biggest thing I learned with taming cloudy water is low chlorine levels are likely the cause as long as your ph is in range. I use to be so timid on adding too much chlorine but over time I realized how quickly it lowers and needs to be frequently added anyway. In a spa aim for 5ppm chlorine as it will only lower from there. Most strips say 3-5 some say 1-3 but that is for pools not spas. Good luck.