Update on the pool. Its been a few weeks now and progress is going good, considering it took me years to mess it up! Im still working with removal of scale and stain. Ive kept the pH around 7.0 to 7.2 for the last few weeks, CH 40-50, TA 90-100 CL based on Bens Best Guess Guide and Culator in the skimmer/ w a sock, and some HEDP in the water.

The scale feels thinner with my fingernail. There is usually a small amount of whitish sediments that settle out over night that I vacuum up. The Culator is turning a tan yellow color indicating that it is removing iron from the water. The water continues to be a little white cloudy. The bottom is readily visible. I believe this to be the action of the HEDP, pH slowly removing the calcium scale.

I did learn a lesson regarding the Culator. I originally had one in the skimmer. Early in this process I added some borax to the skimmer forgetting that the Culator was under the sock. I believe that dose of Borax inactivated that Culator. A couple of days later I realized my mistake so I added the second Culator to the skimmer leaving them both in place. It is obvious now that first Culator didnt absorb anything cause the second is clearly turning tan/yellow. I'll send a picture of both to poolforum@gmail.com

Thanks again