TFP has been a great resource for me so I thought I would give back a little and share this fix I discovered. I bought a house with a pool that had some issues. One issue was that the previous owner had an old metal basketball hoop resting on the side of the pool. So, yes there were many deep and ugly rust spots at the side of the pool. I searched everywhere and was told "Metal out" and some other products may help but those all seemed to be for rust in the water. My rust is above the water line on the exterior concrete deck and lip of the pool. So, after many late nights searching the internet, I saw something about lemon juice. So, I went to the grocery store the next day bought two lemons, cut them up into quarters and I squeezed the juice directly onto the rust and even scrubbed the lemon wedge into the stain and walked away. The next day it looked a little better. So I did this 5 more times and over the course of about a week / week and a half, the rust is completely gone. Pool looks much better without the ugly stains and I couldn't be happier. BTW I originally tried lemon juice concentrate in a bottle.... negative results. So, cheap fix. Hope someone else benefits from this.
Thanks for sharing.
