my first SW was in the basement i made a mixing station down there. buckets across the basement. my FW tanks were in the 'dining room' on the ground floor. i did wc for those from the kitchen sink. 5 gal containers of tap water filled and treated with Prime in advance then buckets of siphoned water into the kitchen sink. containers poured into the FW tanks. when the mixing station came into being the rodi is treated upon make up for trace chlorine with Prime, then buckets into the sink and buckets upstairs. the next saltwater tank was in the dining room with the sump downstairs. WC accomplished by salt mixed water pumped from mixing container to sump, tank water from sump siphoned to drain. when the holes to the basement were being drilled i drilled an extra one. this, at some point will be used for either drain or supply from the basement. i just realized while writing this that i need another drilled hole. the one i have will be used as a pvc drain to the deep sink in the basement. to be used for all WC's or gravel siphoning. the new one for delivering rodi to my FW via hose pulled through the hole and across the dining room. Lowe's Trip!!