Moderator comment: This thread is three different threads combined, so it may seem a little disjointed.
My pool is light green and I brought the chlorine level up to purple on test strips for 3 days . ph good I read that you should keep the chlorine level high But when I brought the new liner the pool store said that chlorine can ruin the liner and shorten the life of the liner.
Should I use an algaecide to get rid of the algae or continue to adding chlorine . I been running the sand filter 12 hours a day for 3 days and back washing 2x a day.
I need the pool clean for 6/18/16.