I'm going to switch from my 3 year old Chlorine Geni (it worked well about 1/2 the time I had it, and now is ready for the dump and would appreciate advice for a replacement. I have a large 40,000 gallon pool, in-ground, plaster, with a variable pump that runs mostly at low speed. I have a cartridge filter. I have an old pebble-concrete and wooden deck which I'd like to replace in a few years. This is in Sacramento which gets very hot some summers with lots of sun on the pool. Lots of leaves and tree droppings in spring and fall. Finally, I do travel and don't have a lot of time for maintenance. My concerns with the liquidator is that I don't want to be refilling it every week which -- for a pool my size -- concerns me.