Vanish Pool & Spa Stain Remover 2 Pack (4LBS)- Natural Safe Citrus Based, Works Excellent on Vinyl, Fiberglass, and Metals, Removes Rust and Other Tough Stains

Why did you pick this product vs others?:Works great. Sprinkled over ugly stained white pool steps and like a miracle they came clean without scrubbing. Also used on skimmer box screws..badly stained, had to scrub but came reasonably clean. For the price this stuff is well worth is. It works.

Our 25K gallon plaster pool had significant tan colored staining on side walls and corners. Used a double pack (4 pounds total) and followed instructions. Results were underwhelming… until day 4, when I was shocked to find my pool looking amazing. Since there were still some light stains left, I ran a second 4 pound dose a week later, and this time the water went cloudy. Took the better part of 2 weeks for the cloudiness to subside (during which, we added clarifier multiple times and did several filter cleanings, but don't know if that was needed). The pool is now clear, and chlorine is now stable (read other reviews on that topic), but the pool looks like new.My thoughts: Your results may vary based on these reviews. Follow instructions. Results may take days. Water chemistry may be off for a week or two after use, but is fixable. Try it! If you are lucky like me, you may see amazing results for very cheap money, and no physical effort.

Cleared the pool stains fast. For years have had issue where every season the pool steps and pool would be brownish after opening. Mostly over the years I concentrated on just clearing the steps using a single bottle of vitamin c tablets in a skimmer bag since those were supposed to be white and the liner was a brown anyway.This year the staining was a bit more extensive on the liner. After cleaning the steps it was very visible that the liner around the steps was a much lighter color than the rest of the pool.I was worried I might have to try doing the whole pool manually.Found this stuff. Put 2 pounds in this morning, waited an hour like the directions said, then turned on my pool robot (not the filter). Came back and by 2:30pm the pool liner is clean & clear. I thought it was going to need 4 lbs based on the 1lb per 10k of water but even half dosed worked fine.

Not an effective stain remover- at least not for my gunite pool! After researching and reading multiple online Amazon and Reddit reviews and watching U Tube videos on pool stain removal products, I decided to give this one a try. I ordered the double pack as some reviews had mentioned needing a second application. After lowering the pH and chlorine as instructed, I added the first container to my pool. As some reviews recommended letting it sit for a day or two and some described following the package instructions exactly which meant turning the pump back on one hour after application, I decided to initially try a compromise between the two sets of instruction and turned my pump back on a couple of hours after application. I figured if this was unsuccessful, I could let it sit longer with application of the second container. Since there were no results after running the pump 48 hours after the first application AND scrubbing the pool vigorously with a metal pool brush multiple times over that 48 hours, I proceeded to adding the second container. This time I let it sit in an unfiltered pool for another 48 hours before resuming filtering. Again, no results! To further collaborate this finding, I had used a Culator metal sequestering packet which comes with a nice color chart indicating the type of metal leached from the pool after stain removal and mine was still white! Meaning no metal had been removed!Since I still have metal stains in the pool, I plan to try ascorbic acid next as I’ve read it is more effective than the citric acid in this product. I hope so as this process is getting expensive!I’ll post a review of that product next.In summary, if you have really set on pool stains, this product may not work on your pool despite your best efforts!

We had really bad stains in our pool making it look muddy on the bottom caused from hard water from our well. Saw this and thought I’ll try anything right now. This stuff blew me away! First container took out about 85% of the stains, second container after 2 hours the pool is as clean and blue again as can be. Chlorine is wiped out but have plenty to replace it. 100% recommend!