Best Pool Clarifiers of 2025

"I've been using Clorox 'Pool & Spa' Swimming Pool Super Water Clarifier, and it has made a world of difference! My pool water is crystal clear and inviting. The results were noticeable after just one use."

"This is a must-have! It kept my pool crystal clear throughout the whole summer. I just let it filter for a few hours, and it was ready to go!"

"I used this every two weeks to help clarify my pool. It works great and kept my pool looking fresh all summer long."

"As a new owner of an indoor, above ground pool, I found this product to be fairly cheap and simple to use. Initially, I thought it didn’t work because I didn’t notice much change after the first day. However, by the second day, my pool was sparkling clean! This product is much more cost-effective than replacing thousands of gallons of water. I now use it once or twice a month, depending on how often the pool is used."

"I’ve observed that my pool remains extra clear after using this clarifier. However, I've noticed that my filter clogs a bit quicker. It makes sense since this product captures the particles in the pool and makes them large enough to be filtered out. My friends are really impressed with how clear my pool looks now, even better than before I started using it!"

"After my pool turned green, I adjusted the chemistry and found a lot of cloudiness. This product did a fantastic job of bonding tiny particles, which allowed my filter to trap them or let them fall to the bottom for siphoning. The process took a few days, but I saw significant progress with each application."

"This product keeps my pool very clear. I can’t wait for pool time!"

"I had mustard algae and nothing worked, but this cleared it out by the next day. Great product!"

"I used this after a shock treatment, and it cleared up my pool fast. I even hose out the filter less often now."

"I’ve used many clarifiers, but this one is my favorite for achieving sparkling water effortlessly. My well water has high iron levels, but after using this product, the water went from coffee-colored to almost clear in just 24 hours, and with a second dose, it was crystal clear again!"

"This is the first product review I’ve ever written because I’m so impressed! After adding it to my 50,000-gallon pool with multiple waterfalls, I was shocked to see my water become insanely clear and sparkling within a day. I never thought my pool could look this good with cartridge filters!"

"I use this product for weekly maintenance and it works well. While not as fast as my usual brand, it effectively clears my pool in a day or two. The instructions are straightforward, and it arrived in perfect condition."

"I only need a few spoonfuls for my 500-gallon hot tub. Using it every two months is a breeze. I add it at night with the jets on, and by morning, the water is crystal clear with just a ring of foamy dirt that wipes off easily."

"Despite balancing the chemicals, my pool was cloudy. After using this product, it became crystal clear within 8-12 hours, and I used half as much compared to other brands. I'm really impressed!"

"Initially, I didn't have success with this product, but that was due to a rough year in pool maintenance. However, after adding the right amount, it worked beautifully! I absolutely love it now."

"I have a 15,000 gallon inground pool that's sanitized with an ozone ionizer. After struggling with cloudy water for weeks and spending hundreds on chemicals, I discovered the Robarb Super Blue Clarifier. After adding it and running my pump, I noticed improvements by the next day. By Saturday morning, my pool was perfectly clear and sparkling. This product saved me from draining my pool, and I’ll be using it regularly now!"

"I have an above-ground pool that had become cloudy despite my efforts. After reading positive reviews, I decided to try the Super Blue Swimming Pool Clarifier. I saw a significant improvement within a day! The particles clumped together, and after a few doses, my pool is now crystal clear. I recommend shocking the pool first if dealing with algae. This clarifier is truly effective and worth the investment!"

"I bought the Super Blue Swimming Pool Clarifier to clear up my cloudy pool. I was truly impressed by the results. Within just a few days, my water was crystal clear and sparkling. The instructions were simple, and it was very affordable. I highly recommend it to anyone needing to restore their pool's clarity quickly and effectively!"

"I use this every month. It keeps my pool clean and sparkly. The price is good and it's easy to use."

"A few weeks before closing my pool, I used this product and it did a wonderful job of clearing the water."

"I purchased this after using a poor-quality shock that left my pool cloudy. Unfortunately, even after following the directions, it didn’t improve. I'm disappointed as this was money down the drain."

"I was pleasantly surprised by how well this product worked. My pool had been green for weeks, but after using just half the bottle, it cleared up overnight with the filter running. Now, the water is crystal clear!"

"I bought this for my hot tub, and I'm thrilled with the results. It's reasonably priced and very effective. Definitely worth it!"

"After shocking our pool, the water turned cloudy and a yellowish-green color. But after mixing just 2oz of this product with five gallons of water, it was back to being crystal clear in just four days!"

“I struggled with green water, but this product made my pool crystal clear after two applications!”

“I was frustrated with algae, but this cleared the water right away!”

“My order arrived promptly, and I’m very satisfied with the results.”

"I ordered this product because it promised same-day delivery. Initially, I was skeptical, having tried various solutions before. However, after using just a few ounces as instructed, I was amazed to see my pool clear by the next morning. This is a miracle for me—I highly recommend it!"

"This product works great! I plan to purchase it again when spring arrives!"

"In 2024, I struggled with cloudy water in my pool despite trying multiple remedies. I've now added Ultimate Natural Pool Clarifier to my list of go-to solutions for keeping my pool water clear."