Thank you guys SOOOOO very much. with my stabilizer test (black dot) not even reading anything two days ago until i added stabilizer i am going to guess that this has been why its taken so much bleach to fend off my green water problem. I put the bleach in every night and it has taken forever but i think the water is mere hours away from from being clear. its light light light LIGHT green/blue and boy does that feel good! Once again...thanks to all of you that responded.