Hello everyone. I have noticed some slight algae again in my pool. Chlorine levels in the 5 range. I also noticed that one of the skimmer doors gets caught up and does not flap freely, could this cause an algae problem due to the circulation of water being reduced ??? The first algae bloom I had I noticed the same thing with the skimmer door. I have been running the pump 24/7 since the first outbreak of algae. Do you get algae only because a lack of Chlorine or what??? Thanks.