Hi gerri, I would wait for your order of the ascorbic acid - keep your ph low, and when the ascorbic acid comes add some where you see the stains - let the water circulate for a couple of hours and see if it all come off - make sure there is enough of the sequestering agent in the water. You shouldn't need a lot of the ascorbic acid - but keep adding some with the pump in circulate until all of the stains are gone. Then you will have to reabalance the water again. Keep me informed - you are getting there.