Alright TFP family, I'm at it again with my metal stains. So... I have been battling these ALL summer, and it's been hard to keep chlorine above 2 or stains come back. I haven't had to SLAM all summer but noticed some pink slime by my stairs and my water got a TINY cloudy, I'm assuming from low Cl, so I removed stairs and brushed the pool like crazy and am now slamming. Here are my results:
So I started the SLAM yesterday afternoon, and my water went from beautiful (minus the slight cloudiness) to a CRAZY deep green after I added the bleach.
Is that normal during the SLAM process?
At first I thought it was the stains sticking to the liner with such a high Cl level, but this morning I woke up and it was much lighter, and my Cl went from 12.5 overnight to a 5.5 this morning! So I am still slamming and the water looks great now, except for the slight metal stains on the liner.
I went to the pool store (they had liquid chlorine on sale) and got to talking to the owner about my battle with my staining. He suggested the brand EZ Clor "Alum Floc" which says its aluminum sulfate. He said this will get the deeply embedded metals out of my sand filter, which is probably the cause of the re-occurring stains. Whatcha guys think? Is it safe to use?
Is it possible that my staining isn't staining at all but algae? When I do the AA treatments the liner gets gorgeous, but when I slowly raise Cl over 2-4 ish they come back. I have also used the sequestrants as well. I appreciate any help! You guys are always awesome