I have an inground swimming pool for the first time and I'm looking for any advice from the experienced. It hasn't been opened in a couple years and looks like the black lagoon. I'm told I should empty it, acid wash the inside to remove stains, and bring in the water trucks. Filtering the existing mess isn't a smart option. Does this sound right? Also, I was given an estimate for around $800--$1000 for that whole process. Also, any general tips for pool maintenance? Don't eat the Baby Ruth, etc..? I know I should be on a swimming pool message board for this info, but I know and trust some of your opinions, so I'd trust feedback from here first. Thanks for any help!