I'm a newbie here and really enjoy your site. Quick question, how much does a screen affect chlorine usage? I've just started using BBB and my pool looks great because of it! Don't have any real history yet, but it seems that my chlorine level is taking a long time to come down after reaching my shock level of 16 plus.
Pool is probably 6-8 degrees cooler than friends with no screen, so it obviously blocks a good bit of sun.