I'm new to the site though I have used it to get info on the AA treatment. Quick question. After lots of reading I believe that now that the stains are gone i want to replace the water and start fresh. My idea with my 32x16 vinyl liner pool is to proceed with dumping roughly 1/3 of water,refilling, and repeat 3 or 4 times. Reason being is that I have battled metal stains again this year and it's getting old. My thought is now that the metal is in the water and sequestered that I get rid of it as best I can. I can keep sequestering it forever or start fresh. Here in Lousiana water is cheap and we have no problems dumping large quantities at a time into the drainage canals. Also at this time I'll be switching to the bleach borax and bakin soda treatment plan you all advise. I'm also changing out my filter sand to avoid and metal trapped in there that could make me pull my hair out if it resettled after this. It's an expensive process either way, but I'd rather have a clean nice pool to use this summer. Any thoughts? Pros/cons you experts might have before I begin? Thanks for all the advice so far. I've learned a lot over past couple weeks of reading forums here.