We have a ton of calcium buildup around the pool we just took over and want to get it removed. We're not afraid of the elbow grease involved in just scraping it off manually but I am concerned about potential changes to the chemistry of the water. Will we see any negative effects of scraping this off? The one tile we scraped left a lot of gritty calcium at the bottom of the pool, would the water absorb it or can we just vacuum like it was never there?