return pump flow

[lockrookie]

so for those who have 150/180/200g tanks what is the return flow that you guys have for your tanks. i will will be building either 2 1 foot overflows or 1 2 foot overflow in the tank. i currently use a quiet one 4000 in my 90 and it seems to work well and was thinking of a quiet one 6000 or 9000 for the 180 i really like how silent they are for in sump applications i have also thought of using two 4000's but would prefer to use one pump rather than two. i realise that i willhave need of powerheads or some sort of closed loop for added flow.. within the tank (this may be a reality to delete powerheads) but to start with im curious what your return pumps are and gph foryour under the tank sump systems

thanks jeff