Has anyone connected two Intex, or other brand, Pump/Sand Filter combinations (Plumbed separately. Not in parallel or in series, but with completely separate plumbing set ups. Running only one at a time.) My current 1/2 HP pump and sand filter, to circulate the water daily through the skimmer and to mix chemicals while the other a 1 HP I picked up used, will be used to run a robotic cleaner and the handling vacuuming duties.