Pool Mate 1-2550-04 Metal Out Stain and Mineral Inhibitor for Swimming Pools,1-Quart, 4-Pack

If you have bad water with lots of iron, you need to keep this stuff handy. I replaced my pool liner this spring and to save money filled it with the hose from my house. My water is very rusty, and I knew I would need something. So, I bought metal out and used it as directed. Needless to say, it worked wonderful!!! Pool filled, water was ugly, started filter and a day later pool was almost crystal clear. Couple of filter backwashes and a good vacuuming and the pool looks great. I will be supplementing with Metal Out every time I use the hose to top off my pool. Must have if you have rusty water.

Don't fallow instruction about waiting for chlorine to be gone from pool , just put it in !!

This kept my pool clear all summer. It went from orange to blue clear in just a day

I was very hesitant to use this in our pool but it worked good with also doing other iron removal methods. We have hard well water so the iron in the water made it very dirty looking even though it wasn’t. Adding the metal out and doing the sock method (check out YouTube for that) our pool was clear after a week. The first two photos are 5 days apart and the third is what it cleared ended up looking like after a few more days. We do not have new water running through our pool constantly so we only needed to use one bottle of the metal out. I do not think that using just the metal out would’ve been effective, the sock method was a big help in getting all of the iron out.

The pool liner at our new house had heavy tan/brown staining all throughout, bad enough that we were considering getting a new liner. We tried several other products that claimed to removed stains without success. This product actually did the job. While the liner isn't spotless, it did reduce the stains to just slight discoloration that you can't really notice unless you specifically pay attention to it. It took a total of 3 days to fully work, which is more than the instructions claim. It's also important to make sure your pH is 6.8 (or below) like the instructions say. Our pH was slightly higher (~6.9-7.0) initially and we were seeing no impact until we got it to the proper level. Great stuff. We will definitely buy again as needed.