I don't have that kind of flap door skimmer, but one of those coaxial things, consisting of a grid section and then a solid tube inside, which floats to about 1cm below the surface of the water. You know the kind, right? I realize that the skimming performance might be reduced or even eliminated, however, I do anticipate another problem where the floating tube floats high enough that it get jammed. As any of you familiar w/the technology are aware, the sections are disconnected by pulling the tub to the top of the assembly and twisting it through a maze of groves until they come apart. This won't usually happen by accident when the water is low, but if the floating tube is dragged up and the grid is dragged down by the suction, could they be jammed? What if I just remove the tube? Is there any danger there of anything except even less skimming?
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