Nov 30, 2016 – For a 500sf pool, the cost to acid was a pool usually ranges from a low of $178 to a high of $255. See the pros, cons and how to decrease the . Either way, during the life of your swimming pool acid washing may come up. For those who have no idea about pool care, this may cause you to ask questions . Swimming Pool Acid Washing or Chlorine Washing For Green Pools and Stained . visible the cost of chemicals and labor exceeds that of draining the pool. Cost To Acid A Wash Pool can vary greatly. Use this calculator to estimate the cost for your home in your zip code. An acid wash is a popular choice for cleaning stains off plaster pool walls. It can save a lot of time and money when considering the alternative to re-plastering.