Hello to all,
While under construction of our pool, we went thru various problems w the pool builder on issues where our travertine coping was damaged. Well, this is a travertine stone and Calcium issue that I resolved.
The waterline for the pool and spa is a 6" travertine stone. When the normal water-line of the spa that also is a spillover into pool went 2-3" below it's full spillover level, I noticed a solid white line after the stone dried. This is a calcium line where the water stays all the time.
So, since I cannot use acid or other abrasive chemicals, I bought some 3M P220 wet/dry sandpaper and after wetting the stone, I was able to sand away the calcium line. I then wiped it well w a wet cotton cloth, then wiped it w a dry cotton cloth - both times w good pressure.
I let the sun dry all the tiles [approximately 25.5 ft] and then applied the Aqua Mix's Enrich & Seal and the stone was enhanced w a little deeper color, but looked great. I did that Monday, then applied another coat today and will let it dry/cure until Wed evening, then turn on the main pump and get her flowing again. Right now I am circulating the water in the pool w two scuppers & scupper pump. The FC was about 8-9 and pH around 7.3 before I started all this, so I should be good w out any major circulation in the spa.
The next thing I will handle in a week or two is the tile/travertine that involves the spillover side...that's going to be a lot of wet-sanding, but the sealer I am using, and adding two coats, will last 3-5 yrs. I'll keep you posted - tstex