Could not find anything to get rid of a stain that just popped up out of nowhere.....nothing worked, except for STAIN FREE. It's worth every penny.

(Posted on 8/14/11)

Used this stuff on a fiberglass pool that came with a foreclosed house we bought. The pool hadn't been used in 4 years was filled with leaves and looked like a swamp. After draining the pool and filling with new water it was obvious that the sides were stained and looked awful. We added 2 things of this and waited 24 hours. The result was absolutely white walls. I could not believe my eyes!

(Posted on 7/2/11)

I do not usually take the time to write a "review" but I had to. I have a above ground pool with serious stains that were from Metal Dumbells that were holding down my Steps, Rusted. Needless to say the pool looked awful. I tried other Chemicals from "other places". No luck. I put this product in at about 6:00pm, ran the filer. Let it go overnight. Came out this morning and it is completely Stain free. It took brand new. My wife and I were shocked. I was stressing as Memorial Day Weekend is here and we are having BBQ and I was Embarrassed at how the liner looked. Not anymore! I am so excited, thank you! I would recommend this to anyone!!!! :-)

(Posted on 5/28/11)

Great product and price, works fast on metal discoloring with little or no harm to water balance, would strongly recommend.

(Posted on 9/26/09)

I used this last season when we had some weird metal staining on our vinyl liner and the plastic skimmers too. You must lower the chlorine levels before using but this product but cleaned it all away within a day! All plastic was white like new and it didn't harm the color on the liner just cleaned it up. Really amazing stuff. Follow with the metal out to keep it nice.

(Posted on 8/10/09)

I have a white fiberglass pool and have had trouble this year with brown staining due to metal in the water. Just sprinkle some of this in the water and wait an hour. The pool will be white white white! It seems a little pricey but is well worth it.

(Posted on 8/10/09)

This product works like magic within 24 hours, now you see it, now you don't! We've had our inground pool for about 15 yrs. The vinyl liner is only about 3 yrs old. I thought our pool was ruined from staining. Read about this product as well as others and decided to try this one. One bottle did a 20,000 gallon pool. Followed up with a bottle of metal free now the pool and steps look like new again!! VERY pleased with this product.

(Posted on 6/17/09)

used this productin a fiberglass pool. one container treated approx. 15 thousand gallons. i was discouraged because after a couple of hours most of the staining was still there. just be patient. 24 hours later my pool was white again. this stuff works great

(Posted on 5/1/09)