pump or pumps and what size???

[Trump]

I recently bought a used 125g, 6' long tank with 2 overflows. Would you use 1 pump and T the two lines or would you use 2 pumps. And then what size (gph) would you use? Thanks

 

[fishman1069]

I would use one pump and T it off. Theres a bunch of pumps you can use but I like the mag series. A mag 12 would work out well for your setup.

 

[Trump]

With 2 overflows..... If I split to 2 pumps what should the gph be for each pump? Do I just do the math and split the gph between 2 pumps?
Or
If I use one pump and T it, how do I figure in the gph for that pump with a T involved? I know you add 100 gph per foot raised, is there a rule of thuumb with a T?