Solar reflector does work very well.I noticed a considerable amount of light reflected back into the tank though when the front canopy panel is open at the bottom about 1.5",so it angles down pointing into the tank.If I was to do it again and space allowed Id angle all 4 inside walls of the canopy 15+deg.Tsunami was great but don't have it any more.Where the skimmer was sitting the level from the ato would rise and fall about 1-1.5"...needed more of a constant level for efficient skimming and used a timer instead.Not using the sump in this thread any more