Just was referred to this site by friend when I almost raised white flag. Unable to get green from bottom and sides pool after brushing, shocking, algae liquid and powder. Sent out SOS to group and this site was highly recommended. I am looking forward to researching this site. I am a novice pool owner (in ground pool). Kept pool good last summer but after winter and winter pool neglect (most likely etiology of my challenges) have real challenge to bring pool back to a usable status. Thanks for the warm welcome.