I recently started using my blue solar cover every night - primarily to reduce the heat and water loss from evaporation. I noticed that the
FC levels will climb quite quickly unless I also reduce the ON time of my SWCG.

This brings up a question I've thought about recently: when battling an algae problem would it be best to keep the pool covered to prevent
FC loss from sunlight? Or does the pool need to "breathe" during the epic battle between chlorine and algae?