No Drain Acid Wash by United Chemicals

I just did a no drain acid wash on a clients pool that had copper stains from their heater, the previous service company did not maintain the chemicals properly so the surface was stained with blue and green metal stains. Applied the No Drain Acid wash by United Chemicals and the pool looks brand new as if they had resurfaced it. I highly recommend it charge the customer the same as and acid wash and don't drain the pool, saving them on their water bill.