hi again, I looked at the pci-rps 2000 rated at 185 gal, also the 3000 rated at 400 gal. are these skimmers in or out of sump? or does it matter? If I go with the 3000, recommended pump of 1-1/2 times volume of systym -140 tank, 65 fuge, 35 sump. total 240 gal.{if it is out of sump I can cut back on that or add to fuge].so thats 360 gph pump needed? in comparison to the ASM G4X -I notice it uses a sedra 9000, [900 gph]. so I am a little confused. what pump would you recomed with the pci-3000?. it does seem like the pci might be a better choice than the ASM G4X? what do you think? thank you.