My parents have a pool at their house, and the pool has always looked great under my father's care. Just recently my father has passed away, and now I'm trying to take care of the pool for my mother. I don't know what to do. The pool is in-ground. It has around 20,000 gallons (I think), and the pump is on a timer. I've been putting chlorine in every once and a while and I've been brushing the the pool as well. Just recently I noticed a layer of "dust" on the bottom of the pool. I've tried brushing it with the pump on and it didn't go away. Went to Leslie's and they gave me Pool First Aid to use. I tried it out, and now the pool is green! Went back to Leslie's and they told me to put in more alkaline, wait a few hours, and then shock the pool. And to follow up with vacuum to waste. Is this going to work? And if so, how can I prevent this from happening again? What type of daily/weekly maintenance is recommended (I live in New Orleans - and that means summer is hot and wet)?
I would greatly appreciate any advice. Thank you in advance.