Forum Title: Partially Drain to Reduce Metal?
I've got a fiberglass pool that's right on the edge of a marsh. They had a tuff time digging the whole because it kept filling w/ water. I've got recurring problems w/ iron staining on the fiberglass. I'm getting set to go w/ the Ascorbic acid treatment, but was wondering if I might get a head start by partially draining the pool to reduce the iron concentration in the water. Among other sources, I've used a long rusted snake to try and clear my skimmer line. 1. Is this a good theory...to reduce the iron concentration. Will it make a big difference? 2. How much can I drain the pool before it becomes hazardous to popping out of the ground? Andrew
Category: pool Post By: AARON BROOKS (Provo, UT), 02/17/2019

I would like others to give their input here to be certain but I kind of doubt that the drain snake would add enough iron in the water to result in staining levels of iron being present in the water. Rather, I would look to the fill water to be a more likely source. Are you filling from a well? If so, and the well water is high in iron, you may continue to run into the same problems. A metal sequestrant might be the way to go in that case. Sounds like your proximity to the marsh would make draining your pool a touchy thing at best. I'll defer to the experts here for the best advice.

- ALAN POWELL (Danbury, CT), 04/08/2019

I would get your fill water tested for iron before doing any water replacement. Fill water is by far the most likely source of iron in the pool. If your fill water doesn't have any iron, then water replacement is a good idea. If you do end up doing some water replacement, you will need to be careful not to let the water level get very far below where it is now.

- TAMARA HORTON (Federal Way, WA), 04/06/2019

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