I have a 15ft round Intex pool, my husband purchased it for me last year as a gift! Well my first issue was iron in my water (I have well water), I have figured out how to clear that issue. Although it takes me 2 weeks to have a sparkling clear pool. Here is where my issue started, last November there was a tragic accident one of the neighborhood cats fell into the pool and died . I didn't realize until a few days later, because I had already closed the pool for the winter. Well by the time I realized the pool had already turned green. I drained the pool in March and cleaned cleaned cleaned it. Then I refilled it, dealt with the iron, then about a month ago the pool turned green over night (literally). I got a shock with aglaecide. The pool turned white cloudy, so I thought I had gotten rid of the problem, but a few days later it was green again. Then I tried the bleach with no luck. I don't have a way getting my water tested, because of transportation issues. So I was wondering if anyone knows a way I could get my beautiful pool back? One thing I noticed was the pool turned green the third time my sister had gotten into the pool for a little while the day before, and she had just dyed her hair blonde and pink (don't ask lol).