[prow]

more info, lets see. the tank is a 180gal with dual overflows. the stand is 36" tall so the pumps will need to push up 5'. the chillers flow rate is 500-1200gph, so i am shooting for 700gph after restrictions. i want to run about 700gph through each sump aswell. i already have the pumps, both external and submersible. so, its not about which pump to buy, its about which pumps to use. it has double overflows and i do want to/will be running separate sumps, one pump for refugium and one for skimmer sump. also the skimmer is a ASM G4xx with a sedra 15000(1500gph) pump.

just for FYI; the pumps i am debating about are that i have are
external;
Iwaki MD40 RLT (pressure pump,750gph at 4’)
Pan World 100XP (pressure pump,790gph at 4’)

or
submersible;
2x Sedra’s 12000 (1200gph at 1’)-if i go this route, most likey, i will use these two.
Sedra 7000 (700gph at 1’)
Sedra 5000 (500gph at 1’)
Danner Supreme Mag 12 (1200gph at 1’)