will two tunze 6255 be enough flow for 80*36*27 high tank?

[jpa14]

If so any idea on placement in the thank is 80*36*27 high with an external overflow
I have mostly sps...thanks

[rvitko]

Yes, it should be enough, I would place one in each back corner aimed to hit the front about 60" away, so almost to the diagonal corner.