If you have metals in your pool water, but no staining or discolored water, you need to sequester the metals with our Metal Stain and Scale Control and eliminate the metals with CuLator Metal Eliminator. The metal sequestrant will hold the metals in solution long enough to let CuLator eliminate the metals from the pool or spa water. If you have metals in your water and you shock the pool, it may turn your water colors. If your pH goes too high, you may get staining or “plate out” the metals in the water.  If you do not eliminate the metals you will get discoloration or staining.  Only CuLator eliminates the metals and prevents discoloration and staining!  CuLator Metal Eliminator and Stain Preventer is non-toxic, has no phosphates, and reduces TDS (total dissolved solids).