OK so I gave a 30 foot above ground pool. I moved in to this house and the pool was never covered. I have never had a pool. I mistakingly added chlorine before fixing the ph. Now my ph is high and I added a half gallon of muriatic acid. Pool is cloudy and tinted green. Should I have vacuumed it first? How at this point do I lower ph? It isn't lowering. Thanks.