BioGuard Erase Iron Stain Remover, 1.75 lb, Highly Effective Iron Stain Remover, Restore Pool Surfaces, Suitable for All Pool Types

If you have metal stains in your pool, mine was stained for 10 years could never get rid of them, this is the stuff you want. Could never figure out how to get rid of them or where they came from.No matter how high I shocked the pool with chlorine the stains remained. Finally saw a YouTube guy said if you have a metal cage screen house over your pool and even though it's aluminum some of the screws may rust and over time add to much iron to your pool especially in FL with the heavy rain water running into your pool. I wish I had taken better pictures to show,but forgot to take them these are from my security camera. The after shot is only 2 hours after application can't wait to see how it looks after 24 hours. What a product!!!!.

I purchased this for salt caused Iron stains and it worked perfectly the stain comes out perfectly

Doubtful and reluctant. This stuff was expensive for two containers!However, it worked perfectly and removed every bit of the rust stains left by the Clorox brand salt!Worked best by working in smallish sections and allowing it to work for the thirty seconds.

Hot happy at all. Wasted

Works like magic!

Didn't get the stain off my pool stairs.

Worked fast and quick removing black and yellow stains fron walls and bottom of the pool. Left the pool filtering system on for 24 hrs. Great product.

I was BLOWN AWAY BY EFFECTIVENESS OF THIS PRODUCT!! I did not really expect it to work, it was a last ditch effort before agreeing to an acid wash....I have included AFTER and BEFORE PICS, they speak for themselves....I had lots of metal stains and a 1 foot brown ring around the top (like bathtub ring), and large swatch down the front of the jacuzzi---nobody could get it off by scrubbing and it looked bad. Someone in the reviews said, do EXACTLY what they say on the label of this product and that is what I did! Make sure you have right quantity for pool size. I followed it up w/ Pool Magnet Plus which they recommend 1 hour into the treatment....which makes sure iron doesn't re-adhere. I didn't have a valve on my system to bypass heater, but it wasn't a big deal; I had the pool guy do a bypass which took 10 minutes, and now he will undo it. Have patience and let the product do its job for the 24 hours and let it circulate....I am very happy with this product! I think you will be too!!