I am new but have read TFP some time. Now I am losing a battle. I live in Phoenix. My pool is around 30,000. I knew my water was old and hard and my filter sand needs changed and the CYA is 120. So far I have spent over $250 with no luck in knocking out the Algae. I was waiting to drain my pool so I let it go.....too much go. I was told I need to wait for cooler temps (low 80's) to drain the pool. That is probably another month. I don't want to be breeding mosquitos. Tomorrow I will have used 50 pounds of Turbo Shock at 9 pounds per day (that math seems a little off??). I also started with a bottle of TruBlu 4 month bottle of algaecide. 32 ounces all on the first morning. Pump has run non-stop. I have brushed daily. At this point I do not see any change!!! Are there any good suggestions out there? I know use liquid chlorine, drain some and add water to get CYA down. Oh pH was tad high, 7.8 I think. 2800 particulates, I need to learn all of this instead of relying on the pool store guys who just go ka-ching. If I keep hitting it with shock will it really go away...one day. Thank you...looking forward to my education.