I am the head manager of a summer swim club in New Jersey. 200,000 gallon main pool. 8 Lane Competitive pool. The pool is winterized but water is still left in there for the winter. Cover came off Saturday and I have 60 ppm of Nitrates in the pool. Typical algae on bottom of pool and cleaning that still. Does anyone know of ways that I can get rid of the nitrates? Last summer I had to drain the 200,000 gallon pool and call in a favor from the local FD to fill it back up before the BOH inspection. Thanks for the help.