I did a search for those words but didn't really find anything I can slap my husband with. We got algae bc he let the FC drop below 5. He says it's "not safe" to swim with FC above 5. I say BS. I want it at no less than 6. it's hot here. Now it's at 17. (finished the SLAM). Is there any proof anywhere i can look that might sway him? otherwise, I guess I am swimming alone tomorrow and Monday....sigh....