I was wondering will installing a tarp (to provide shade) 10 feet above the ground over my pool have any negative side-effects on my pool? Meaning, does pool water benefit anything from the sun's UV light at all? I hear that it will actually make my chlorine last longer but I might have a chance of "black algae" from the shade. Is this true? Please advice! So far I found this forum to be the most helpful around.
20k gallon concrete Pool
All chemistry properly balanced
http://www.sears.com/shc/s/p_10153_1260 ... ockType=G4