Many thanks to Chris Walkerow at Periodic Products and Fred Schweer at Pool Rx for incredible help with our pool.
We’ve been dealing with gray/brown discoloration on the bottom of this pool in southwestern Pennsylvania for several years without success. Finally last fall, I reached out to Pool Rx whose sanitizing product we use. Fred worked with us and directed us toward C U Lator to deal with copper removal. In talking with Chris about the issue, he recommended that we use their Iron Bacteria Eliminator product to address the discoloration. So after dumping and refilling the pool to get rid of the very high chlorine stabilizer that had built up from past efforts, we followed Chris and Fred’s guidance to the letter. Nothing went in the pool this season without their approval. We couldn’t get the C U Lator products locally so we had them shipped up from Chris in Florida. Even liquid chlorine was very difficult to source locally: “Nobody uses that, use tablets or granular” is what we kept hearing. But we insisted on what these two chemists recommended.
We dumped and refilled the pool in late June, and completed the Iron Bacteria treatment just in time to swim over the July 4th weekend. The pool has been clear, clean, and stable the rest of the season! This is the first time in at least 3 years that we have had stable pool chemistry and had a normal pool bottom appearance. Our local pool supplier ran our water tests but quickly learned not to make any recommendations because we were “using another lab.” After about six weeks of consistently stable test results, they started to ask: “What are you putting in this pool?”
We HIGHLY recommend Chris and Fred for their outstanding ability to deal with pool chemistry issues. Apparently, a combination of iron bacteria in our fill water combined with clay soil, a high water table, and direct sunlight resulted in this persistent discoloration. Chris was the first to figure out a solution.
Attached are before and after pictures. A HUGE thank you to Chris and Fred!!!