variable-speed drives

Avoiding ‘Dead Spots’
Just the term “dead spot” sounds bad on its own – and that’s probably a good thing, because it’s definitely something every watershaper should try to avoid. That can be tough these days, given the complex shapes of modern swimming pools and their multiple curves, inlets, grottos, vanishing edges, beach entries, tanning shelves and various other features that complicate the interior contours of the shell. To get the job done, you need to