The very best way to prevent water discoloration and metal staining on your new pool surface is to remove all the metals from the fill water with a FillFast Metal Remover and Water Pre-Filter:
However, if you are having a professional build your pool, make sure they know you want to use CuLator Ultra 4.0 in the pump basket to remove all stain-causing metals. They generally will use a sequestering agent, but that isn’t enough. You see, if you have a gunite or diamond brite or any aggregate surface, you must brush the surface every day for 30 days to help the surface cure and harden properly. That first month, the surface may release additional metals into the water. So, even if you have run your water through the FillFast system, you still need to use a sequestering agent and a CuLator Ultra 4.0 to protect the surface. Just leave the CuLator in your pump basket for several months to make sure your surface is perfect. To protect from future staining, just replace the used CuLator Ultra 4.0 with a new one!
This works with vinyl pools, and fiberglass pools, as well!
If you are on well water, pre-filtering is the best solution. Carbon and resin tanks and other pre-filters only get out particulate and treat small amounts of water. The FillFast uses patented CuLator in a filter to remove the ionized stain-causing metals BEFORE they get into the swimming pool water:
And, FillFast treats up to 10,000 gallons!