When treating a metal stain in a swimming pool or spa, there are three steps you must follow:
- REMOVE THE METAL STAINS FROM THE WALL: This process is usually the easy step because when you pour the stain treatment (generally ascorbic acid and/or citric acid into the pool, the stains “magically” disappear. What is happening is a chemical reaction where the acid is a reducing agent and allows the metals to go back into the pool water. The trick is that you have to take your chlorine level below 1 (or zero) or the acid will just go after the chlorine first before it goes after the metals on your surface.
- SEQUESTER THE METALS TO KEEP THEM IN SUSPENSION: Pour a sequestering agent into the water. Generally, these are liquids that come in quart sizes. Just pour directly into the water around the edge of the pool. Make sure that the sequestering agent you use does NOT have phosphonic acid. Chlorine, sun, and time break phosphonic acid down into phosphates. Phosphates are algae food! Sequestering agents allow the metals to stay in suspension long enough for the next step to work. Often, the phosphates from your sequestering agent is the reason you get algae during a stain treatment. Food for thought!
- USE CuLATOR METAL ELIMINATOR TO REMOVE AND ELIMINATE METALS FROM THE WATER: To finish the stain treatment, always use CuLator Metal Eliminator to remove and eliminate the stain-causing metals from the water. I recommend using a CuLator Ultra 4.0 for every 20,000 gallons of water. If you do not use CuLator, your stain will reappear quickly. Sequestering agents are a temporary fix. CuLator is the CURE!
To make life easier, we have packaged all these products together, with full instructions, into our NO-DRAIN METAL STAIN ELIMINATOR KIT: