I needed your advice on why I could have an algae problem as I am stumped. Just a background, I opened my pool and had an algae issue and completed the SLAM process with meeting all 3 of the criteria. Since then, I have had no issues and have kept my FC above the target chlorine level on the chart. For the last couple of days, I have seen a steadily increasing green film at the bottom of the pool. On the 2nd day of seeing this, these were my #'s:
Even with my FC levels, the algae is in full bloom. I guess I have another SLAM coming my way, however just want to know what could have gone wrong so it doesn't happen again. Also, there has been heavy downpours here recently, could that have played a role?